Unhappy Cell C customer

On Sunday the 17the July, i was at church and got an sms saying that i have renewed my contract, of which i did not, i then contacted cell c and handed an affidavit, and opened a ***** case with cellc, i have not heard from them, the only time i get calls from them is when they try to sell me another contract, im really disappointed. My premium went up, i got debited for something i do not know about, and when one calls the customer service, you are always taken from one department to the other. Im sick of cell c. Their consultants are obviously trying to make commission at our expense and nothing is done about it.