Disgruntled mrp mobile contract holder

I'm so disgruntled with mrp mobile. I called them requesting a cancellation of my contract in February 2018 and was given a cancellation fee which I paid. According to the voice recording I asked how soon the contract would be cancelled, I was advised to call back to check which I have no record of doing. A year later they debit my account saying that I never called again to actually cancel the contract as per our telephone conversation. I obviously have no paper contract as I knew that the contract was cancelled. The phone in question stopped working soon after I cancelled and paid. Apparently my benefits expire after a certain period, I didnt try using the sim card as I knew the contract was cancelled. I'm now given the option of continuing the contract or requesting anew cancellation which is just a few rands less than the initial cancellation fee I paid. I think this is ****************!!!!!