There are a few reasons why this could happen. Here's what happens...

As soon as you click on the 'Call' button, Exotel places a call from your Exotel number to your number. Once you pick up the call, Exotel calls the dialed number. 

You may not get a call on your number if

1) Your number is switched off (doh!)

2) Your number is not reachable

3) There is an operator level connection problem (Eg: Calls from Tata to Vodafone are failing)

Ok. What can I do now?

Try calling your number from another number and check if the call goes through fine. 

Call went through fine?

Raise a support ticket by sending an email to with details like your username, the number you tried calling and the time of the call.