CELL C terrible service and billing

been wanting to cancel my contract with cell c because of poor coverage in my area. At first I tried getting to make an arrangement with them to pay off the device because I did not have that amount cash and they said no, fine. I was able to raise the amount and ready to pay, however we now could not agree what the amount was because they were telling me a different story than what was on the monthly statement they were sending me. I was told I would have to pay the amount by 12 mid-day which was less than an hour and was on the phone with them trying to settle the matter only to be put on hold and cut off.