Cell C determined to bring their good customers down by all casts

Once bitten twice shy. This is an idiom that I never took heed of, that is concerning Cell C. This is happening to me twice now, with this same cell c company. I had a contract with cell c with lapsed in May. Instead of renewing the contract I opted for a month to month basis data contract, which I have been paying for promptly on monthly basis. Today, after four months of my contract lapsing cell c suspends my services, they send me a message telling me that they have listed me at the credit bureau for that I owe them R278. Damn, cell c will really be the death of me. How do I owe R278 when my month to month data contract is only R199 monthly? And instead of calling me first as your erstwhile customer and advice me of this supposed debt you chose run to the credit bureau to tarnish my name. Shame on you!!! I tried calling your service desk just now but my calls went unanswered. Now here are my instructions to you. Send me the statement via my email ***, and if the debt is legit I will pay it promptly. Then delist me from the credit bureau. Then make note that I am canceling the month to month data contract with immediate effect, this is my last month with you, as I am going to port my number. Do not try to call me back, as I am not going to answer your calls. Just send me the statement to the email address provided and the banking details to which I must make payment. Then cancel.my contract, this is my last month!!! Otherwise Cell C is going to out me in **** for nothing, nxa