STOP FINANCIAL EXPLOITATION OF CUTOMERS

I am worry about this company and would not even lie about my feelings. the service is OK, but now i am concern about financial exploitation. I took a vumatel package that was at the time 430.00 on 30/30 just after 5 months the price has gone up to 488.00 without any reason. i had more choices before i selected this company. now i am tide on a 1 year contract without which i cannot leave or pay a fine. Can please someone ask them not to increase my bills or allow me to leave. Dont exploit me please