Worse service provider ever

Cell c has turned out to be a thorn in my flesh. I regret ever taking this data sim card in the first place. I even took my complaint to ICASA and they came back to me and I thought this whole thing was resolved. To my amazement again this month I got an sms saying I must pay R394.48 upon inquiring with their consultant why must I pay this amount again for the hundred time. I was told I have two contracts with them one which isR304.99 ( this I know of) and the the one which is R89.00. Now we are back to square one. I had ask how because like I said from my complaint I was told that this was not a contract it's a month to month service which I can cancel anytime I wanted to. And when they came back to me after I lodged my complaint with ICASA they told me that they have listed to the recordings and the consultant was clearly on the wrong with her explanation and last month I paid R377 which I did not disagree with cause I've used that amount of data. Now since then I haven't used any data from this sim card but they say I have to pay it cause it's a contract that's what the consultant told me when I enquire. I said I need them to cancel this sim card then the guy told it will take until December for the cancellation to go through cause it's a contract, again I'm like how can this now be a contract when from when I took it I was told it's not a contract it's a month to month thing? He said he was writing a problem ticket and I got a *** this was on Monday today it's Friday I haven't heard anything from their side yet.