MTN is a ****

Really this is bad service I am getting from MTN, how is it that you still sending me invoices of a contract I've requestng for you guys to cancel as you have sold me ****s but now you are still billing me for that. I have proof that you have have collected the phone but you still billing for a device I do not have. This is ***** and I am taking this further, I have had it with you people.