Get a professional AI voice agent built on Vapi, Retell, Bland AI, Synthflow or GoHighLevel — automating your calls, follow-ups, bookings and lead reactivation with precision-engineered call flows.
I Will Build an AI Voice Calling Agent for Your Business
A simple AI voice agent for basic inbound tasks such as welcome or greeting calls.
- Simple AI voice agent setup on your chosen platform
- AI LLM model integration for natural responses
- Custom call flow for welcome, greeting or basic inbound tasks
- Platform configuration and full end-to-end testing
- Delivered ready to handle live calls
A fully connected AI voice agent with CRM integration, RAG and multi-language support.
- Everything in Starter, scaled to a more advanced use case
- Retrieval-Augmented Generation (RAG) for knowledge-base-driven responses
- Integration with your CRM or database for live data sync
- Multi-language support configured for your audience
- Inbound or outbound call flow logic for follow-ups, lead qualification or bookings
- Full testing across all call paths and edge cases
A complete, multi-flow AI voice system with advanced automation, CRM, RAG and full workflow orchestration.
- Everything in Boost, built to full production-ready specification
- Complex multi-step call flows: lead generation, reactivation, follow-up and booking in one system
- n8n or GoHighLevel workflow automation connecting voice, CRM and forms seamlessly
- Retrieval-Augmented Generation (RAG) with advanced knowledge-base configuration
- Multi-language support with tone and script tailored to your niche
- Comprehensive end-to-end testing, flow-error resolution and handover documentation
Request a Custom Offer
Log In to Request a Custom Offer
Create a free account or log in to request a personalised offer from this Zinner.
Log In / RegisterAsk a Pre-Sale Question
Log In to Ask a Question
To reduce platform spam, pre-sale messages can only be sent by logged-in users.
Create a free account or log in to message this Zinner directly.
Log In / RegisterAt a Glance
Key details about this service to help you decide. Generated by Zinn Hub, not the seller.
Value Position
Platforms Supported
Call Types
AI Capability
Best For
What You'll Receive
Full Description
Stop losing valuable leads to clunky, unconvincing bots. A well-built AI voice agent answers calls, follows up with prospects, books appointments and reactivates cold leads — all without a human lifting the phone. That is exactly what this service delivers.
Zinn Digital® specialises in building conversion-focused AI voice calling agents across the leading platforms: Vapi, Retell AI, Bland AI, Synthflow, GoHighLevel, n8n, and Simpletalk AI. Whether you need a simple welcome agent or a fully connected inbound/outbound calling system tied into your CRM and calendar, we engineer the logic from the ground up to match your exact business workflow.
**What you receive:**
- A purpose-built AI voice agent configured to your use case (welcome calls, follow-ups, lead qualification, appointment booking or support)
- Integration with your chosen voice AI platform — Vapi, Retell, Bland AI, Synthflow or GoHighLevel
- Custom call flow logic designed for genuine conversion, not generic scripts
- AI LLM model integration so your agent understands and responds naturally
- Optional CRM/database connectivity and multi-language support (available on higher tiers)
- Optional Retrieval-Augmented Generation (RAG) for knowledge-base-driven responses (available on higher tiers)
- Thorough testing of every call path before handover
**How the process works:**
Once your order is placed, share your business details, call objectives and any existing tools or CRM you use. We review your requirements, design the call flow logic, build and configure the agent on your chosen platform, test the full flow end-to-end, then deliver a working agent ready to handle real calls.
**Who this is for:**
This service is ideal for agencies, SaaS founders, sales teams, real estate operators, healthcare practices, eCommerce brands and any business that relies on outbound or inbound calling to generate or convert leads. If you are currently spending hours on manual follow-up calls or your leads are going cold because no one is reaching out fast enough, an AI voice agent solves that problem at scale.
**Why Zinn Digital®:**
With 45+ voice AI projects delivered across Vapi, Retell, Bland AI, Synthflow and GoHighLevel, we have hands-on experience resolving the real-world issues that trip up most setups — dropped calls, incorrect bot responses, missed handovers and broken CRM connections. We provide real-time updates throughout your project and ongoing support after delivery. Trusted by agencies and sales teams across London and beyond.
Select the tier that matches your scope, place your order, and let us automate your next 1,000 calls.
Zinner Quality Guarantee
Every Zinner is reviewed and approved before joining the platform.
All services are backed by our quality assurance commitment.
Your payment is protected until you approve the delivered work.
Compare Packages
| Feature | Starter | Boost | Premium |
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
| Revisions | 1 | 2 | 3 |
| Simple AI voice agent setup on your chosen platform | ✓ | ✕ | ✕ |
| AI LLM model integration for natural responses | ✓ | ✕ | ✕ |
| Custom call flow for welcome, greeting or basic inbound tasks | ✓ | ✕ | ✕ |
| Platform configuration and full end-to-end testing | ✓ | ✕ | ✕ |
| Delivered ready to handle live calls | ✓ | ✕ | ✕ |
| Everything in Starter, scaled to a more advanced use case | ✕ | ✓ | ✕ |
| Retrieval-Augmented Generation (RAG) for knowledge-base-driven responses | ✕ | ✓ | ✕ |
| Integration with your CRM or database for live data sync | ✕ | ✓ | ✕ |
| Multi-language support configured for your audience | ✕ | ✓ | ✕ |
| Inbound or outbound call flow logic for follow-ups, lead qualification or bookings | ✕ | ✓ | ✕ |
| Full testing across all call paths and edge cases | ✕ | ✓ | ✕ |
| Everything in Boost, built to full production-ready specification | ✕ | ✕ | ✓ |
| Complex multi-step call flows: lead generation, reactivation, follow-up and booking in one system | ✕ | ✕ | ✓ |
| n8n or GoHighLevel workflow automation connecting voice, CRM and forms seamlessly | ✕ | ✕ | ✓ |
| Retrieval-Augmented Generation (RAG) with advanced knowledge-base configuration | ✕ | ✕ | ✓ |
| Multi-language support with tone and script tailored to your niche | ✕ | ✕ | ✓ |
| Comprehensive end-to-end testing, flow-error resolution and handover documentation | ✕ | ✕ | ✓ |
Portfolio
Examples of the seller's work related to this Zinn.
Build an AI Voice Calling Agent for Your Business
Build an AI Voice Calling Agent for Your Business
Extra Information
Why Choose Me
Tools I Use
Perfect For
Frequently Asked Questions
We build and configure AI voice agents on Vapi, Retell AI, Bland AI, Synthflow, GoHighLevel, n8n and Simpletalk AI. If you have a preferred platform, let us know when you place your order and we will build on it. If you are unsure, we can advise the best fit for your use case.
To begin, we need a clear description of your use case (e.g. welcome calls, lead follow-up, appointment booking), the platform you use or prefer, any existing CRM or calendar tools, and an outline of the call flow or script you have in mind. The more context you share, the faster and more accurately we can build.
Yes. We configure agents for inbound calls (responding to live customer enquiries) and outbound calls (follow-ups, lead reactivation, appointment reminders). Your order details and chosen tier will determine the scope — just describe your exact requirement when you submit your brief.
RAG allows your AI agent to draw on a knowledge base — such as your FAQs, product details or service documentation — when answering caller questions. Instead of generic responses, the agent pulls accurate, relevant information in real time. This is available on the Boost and Premium tiers.
We integrate the voice agent with your existing CRM or database using native platform connections (e.g. GoHighLevel) or workflow automation via n8n. This allows the agent to update contact records, trigger follow-up sequences or book appointments automatically. Available from the Boost tier upwards.
Each tier includes a set number of revision rounds. If the agent is not behaving as specified within the agreed scope, raise it via the order chat and we will investigate and resolve it promptly. We also offer a standalone call flow audit as an add-on if you need troubleshooting on an existing setup.
Absolutely. We tailor the call flow logic, script structure and conversational tone to match your industry — whether that is real estate, healthcare, SaaS, eCommerce or agency services. Share your brand voice and target audience in your brief and we will build accordingly.
Customer Reviews
See what our customers say about this Zinn
Only logged in customers who have purchased this product may leave a review.
