Made full payment.

On August 1, 2012 at 2:50am a full monthly payment was placed to my account from my debit card.. My service was disconnected on July 2, 2012..When I placed my full payment my service was reconnected and a confirmation number was sent via text to my phone. Four days later on August 4,2012 my service was disconnected again.. A great inconvience.. When I contacted cricket via phone and two visit I was told my August full monthly payment was applied to July bill..Cricket is a No Contract company. How im I responsible.