Contract Cancelled

I had a contract with Mtn since 2013 may and i was told if i want to cancel the contract i must cancel the exact month i took out the contract which i did and i spoke to a lady called gladys who said i will be contacted after 3 days(***) and i wasn't and then the strike happened i couldn't get hold of mtn at all i called again and spoke to Rhifiwa who also promised me to get back to me but still i got no help from him. When i called the 3rd time i spoke to a guy called Luciano who did in 1 day and as much as i was impressed with his work it's still haunting me cause he closed the contract and changed the number to a prepaid and cancelled any amount owed and told me i do not owe mtn anything since i had cancelled my contract on time but now my account is suspended and i do not understand why, when i thought i had part ways with mtn my 2 last refs were *** cancellation and *** refund invoice. I do not owe you guys anything and i want my name cleared. The cellphone number in question is ***