Cancellation of Contract Please

I just want to respond to MTN by saying I AM FED UP with their ****** nonsense and I am cancelling my contract. Now all these people are making me feel as if I am mad by saying the data was used by myself which I still maintain I did not. When I go onto data usage there is a period that is restricted that does not allow me to see what data was used for. And this Wenzile has the ****** guts to tell me about network engineers said the data was used. When I spoke to one of the network engineers that I know personally he agreed with me there is a problem and actually encouraged my cancellation. Its very amazing what MTN does to its loyal clients. If someone can actuaLly do some introspectio to see that I am not the only MTN client that has been having this problem but yeah its still the clients fault. Thank for such a BULL service. MAD MAD MAD!!!!!! I still pay though for God knows what!!! I had said I wanted someone frm MTN to phone me