Hi ah_03141,
Currently, Vapi's free numbers have a daily call limit in place. Specifically, there is a restriction on the number of outbound calls you can make with these free numbers. Since you are using a free Vapi number, the service comes with these limitations to manage resources effectively.
To bypass these limits, you can consider importing a number from another provider like Twilio, Vonage, or Telnyx, which would allow you to scale without these particular constraints. This can be facilitated by using the Vapi dashboard or API. For more detailed steps on importing and configuring your numbers, you might find [this guide](
https://docs.vapi.ai/phone-calling) helpful.
Alternatively, if you require more flexibility and fewer restrictions, you can opt for moving to a credit-based billing system that would allow for more calls and potentially eliminate current limitations.