INCORRECT BILLING AMOUNT & A RIPP OFF

I received from Pholosa credit solutions & debit collecting agency. my current amount as per my settlement amount is R2002.36. in addition, I also made a R700 payment last year the 17/09/2014, which mean that my outstanding balance must reflect R2002,36 - R700 = R1 302,36. I had a direct debit setup with Pholosa credit solutions & it just stopped. I called them very recently & discovered that they no longer deal with Cell c and that the account was handed back to Cell c. I am shocked by this because I imagined that my account was paid up to date & done. I called Cell c pre-legal department & they tell me that my balance is over R3000.00, I really don't need this additional stress right now from Cell c. Cell c is also the reason why I got blacklisted. I am taking this matter also to the public protector - credit ombudsman. My last contact was with Tshidi from the Pre-legal department. Tshidi was not the most pleasant person to speak too. I demanded to speak to a manager, but to this very date & time I have received no phone call. I have EMAILED: [Email Removed] AND STILL NO LUCK! I SPOKE TO Sibusiso Mgemane (SUPERVISOR) FROM Pholosa credit solutions. THIS IS A *******!