OVERCHARGE AND POOR SERVICE

I HAVE BEEN TRYING TO CHANGE MY BANK ACCOUNT WITH CELL C SINCE JULY, WHICH MEANS FOR THE MOST PART IVE BEEN MAKING MANUAL PAYMENTS IN THIS REGARD, NOT ONLY HAVE THEY CHARGED ME FOR FAILED DEBIT ORDERS ON A CLOSED ACCOUNT BUT THEY ALSO TOOK THE LIBERTY OF ADDING 1000 MG ON MY CONTRACT WHICH I DID NOT ASK. THE COMPANY IS JUST OVER BILLING ME AT EVERY TURN, I DONT EVEN KNOW HOW MUCH I AM LIABLE FOR EVERY MONTH AS PER MY CONTRACT, BECUASE THERE IS ALWAYS A CHARGE ABOUT THIS OR THAT IN ADDITION. EVEN NOW I AM BEING CHARGED AN ARREAS AMOUNT WHICH I DONT UNDERSTAND BECUASE I HAVE NEVER MISSED A PAYMENT. THE SERVICE I HAVE BEEN RECIEVING FROM THE STAFF IS UNPROFFESIONAL AND UNRELIABLE, THEY NEVER GET BACK TO YOU IN THE TIME THEY SAY. DOING BUSINESS WITH CELL C IS JUST DISASTROUS.