Mtn Poor Workmanship

I have been trying to cancel my contract at the moment of expiry with Mtn and convert it to prepaid, as I still stand this has not been achived and no one is willing to resolve my issue withing a period of three weeks.

I have tried to do this process also telephonically with no luck through hours of waiting to get connected to the relevant department and right person during the contract expiry period and also through the numerous email communication to at least three Mtn contracts representatives.

What is more fustrating is that at this point my line is blocked and it's one of my primary communication lines, with mtn threatning to further block it from receiving calls due to an outstanding balance of which was accumulated due to the non-cancellation of the contract.