Morning recently had a bad or must i say a tragic moment with cell c

Morning recently had a bad or must i say a tragic moment with cell c . i have a contract with them which is supposed to be R299 monthly but recently their debit order is so inconsistent in the month of july they debited R369 August R966 i called them they've always been promising to escalate the matter but to this date no refund or explaination has been granted to me .