[AC Question]

I had a really hard discussion with my girlfriend, because she heard some beeps during whatsapp call, but i didn't heard nothing! She asked me if someone called me, I replayed "no, no one called me", after that call ended without reason. I called her again because I thought that she ended the call, but she tought that it was me, becouse "I wanted to talk with someone else"! I said again that no one called me but she begun to call me a liar!

This is really a problem!
Someone can help me please! Similar problems???