terrible service from G-Bets

I have had money *****ulently removed from my Gbets account – someone not me was playing on my account, and now Gbets refuse to assist me and say I am responsible they refuse to help me ? I was dealing with a lady called Mia on the online chat service and then lady called me thereafter from *** They say I was playing a game I have never played in my life where money was lost and they refuse to reimburse me?