@Uphind
I'm sorry to hear that you're experiencing issues with your scenario. It sounds like there might be a problem with the configuration or connectivity of your "make a request" module or the "create an outbound phone call" module.
For the "Service is temporarily unavailable" error, this could be a temporary issue with the service provider or an issue with your network connection. Please ensure that your internet connection is stable and try again after a short while.
Regarding the [400] Bad Request error when using the "create an outbound phone call" module, this typically indicates that there might be an issue with the input parameters you're providing. Please double-check that all required fields are filled out correctly and that you're not exceeding any limits of your subscription or quota.
If you've recently added your own provider key in the voice section, please ensure that it is entered correctly and that you have not exceeded your subscription or quota limit, as this is a common cause for the first message delivery failure.
If the problem persists, please ask support for more info on this, as they may need to look into your specific scenario and account details to resolve the issue.