Vapi voicemail problems
# support
f
Problem - Despite configuring my Assistant's 'First Message' field and 'System Prompt' with a custom voicemail message for 'Dental Stars', when a call goes to voicemail, it consistently plays 'Hello, this is Riley from Wellness Partners'. It often cuts off the beginning of my intended message (e.g., 'confirm your appointment...') and then immediately switches to the 'Riley' message. Its playing a whole different voicemail from the first message that its supposed to play. What you've tried : - Adjusted "Max Voicemail Message Wait" (even to very high values like 10-15s). - Adjusted "Initial Detection Delay" and "Max Detection Retries." - Set "First Message Mode" to Assistant waits for user and cleared the "First Message" field (then tried putting the voicemail in the "First Message" field as well). - Updated the "System Prompt" with extremely explicit instructions for voicemail handling and the exact message. - Confirmed Make.com API call to Vapi only sends assistantId and phoneNumberId (as firstMessage, voicemailMessage, and variables are not accepted in the API payload anymore). - Changed first message mode to Assistant waits for user😩 https://cdn.discordapp.com/attachments/1386433800959037440/1386433801978380298/6-22.png?ex=6859b099&is=68585f19&hm=3870bb51480e264ed428486e5b616c676937a04c40c1abccf850955fed9da7fc& https://cdn.discordapp.com/attachments/1386433800959037440/1386433802326511718/Voicemail.jpeg?ex=6859b099&is=68585f19&hm=b20d0ea55801f8a8c6f5d8bb9dcfa2f687c3b4da4f598a34892b77c73756c474&
p
Hey! To help track down this issue, could you share: - The call ID - When exactly this happened (the timestamp) - What response you expected to get - What response you actually got instead This would really help us figure out what went wrong!
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- 1d3efd8e-bc89-43d9-b55d-ff123c264432 - June 23 14:02 - It should wait for voicemail greeting and then leave this message. - Hi {{patientName}}, this is your AI assistant from Dental Stars calling to confirm your appointment for tomorrow, {{appointmentDate | date: "%B %d, %Y"}} at {{appointmentTime}} for your {{reasonForVisit}}. If you have any questions, please call the clinic directly at 7021234567. To reschedule or cancel, please use the email link provided in your appointment confirmation email. Thank you and we look forward to seeing you! - this is what I got instead - User Your call has been forwarded to voice mail. The person you're trying to reach is not available. At the tone, AI Hi, Kim. This is your AI assistant from Dental Stars calling to confirm Hello. This is Riley from Wellness Partners. I'm calling about your appointment. Please call us back at your earliest convenience so we can confirm your scheduling details. Hello. This is Riley from Wellness Partners. I am calling about your appointment. It messes up differently everytime it leaves a voicemail. Sometimes it starts to leave the VM too early and inserts Wellness partners from somewhere. https://cdn.discordapp.com/attachments/1386433800959037440/1387036849993945230/Screenshot_2025-06-24_at_4.48.20_AM.png?ex=685be23a&is=685a90ba&hm=c12049798bbf02dda6506ba46bab60e5a40a5ed336143a6997b39bdc0ae68f32&
p
Thank you for providing that information. We will review these details and reach out to you if we need additional info or if we have an update for your request.
Hello, Apologies for the delay due to my current online commitments and other work responsibilities, I haven’t yet had a chance to review your ticket. I’ll dive in as soon as possible and get back to you promptly. Thank you for your patience.
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