Call 1-888-280-4331 for Amazon’s main customer support line.
You can also call Amazon’s general customer support number for help. They can direct you to someone who can answer your questions about your device or Kindle service.
Herein, can I call a Kindle?
The Kindle Fire is NOT a cell phone or telephone. It is a tablet. So there is no way that you can turn it into a telephone or cell phone through Wi-Fi. Sorry about that.