Making a call is simple. The instructions are below, and you can watch a video of the process here.First, scroll to which of your Active Burners you want to use and then tap the call button in the bottom. If you're in your "All recent" inbox, you'll have the option to pick a burner to call out from.
You are then sent to the dialing pad screen, where you can either type in a number, or select a contact by tapping on the "+" button on the top right.
When you tap the call button, Burner explains to you that we will first dial your burner number, and then your call will get connected. This is done to protect your privacy. So when you see your phone dialing your burner number instead of the number you were dialing, this is absolutely expected behavior.