****ty Network MTN

What a ****ty ****ty network. I have been paying amounts that I am told I owe. I paid that then asked them to cancel my services. Then they said it will take a month to cancel but I will owe that month R143.00 of which I was fine with. The contract was going to be actively cancelled from the 8th June since I called on the 8th May. When I make an enquiry today if they received the payment they are saying yes but now Im owing R154. I mean what the hell!!!!! Where did this one come from? No MTN is a **** and a very ****ty network. I wouldn't recommend anyone using it!!