Migrate to prepaid - waiting for one week now

One of my MTN contracts expired on 13th of March. I have phone on +- 12th of February to inform MTN to migrate the contract to prepaid. The operator informed me that I should phone on the date of expiry to migrate the contract. This was on a Sunday - they said then I must phone on the Monday (14th) as the cancellations (or Retentions) department is only open on business days - which is what I did. I Phoned on the Monday the 14th to migrate the contract. The operator informed me that it will take 48 hours to complete. By Wednesday it was still on contract and after 4 calls to MTN with various excuses and promises I am still on contract 1 week later. Even after escalating it on Saturday - I am still on contract. I use to have 5 contracts with MTN and I assure have cancelled 3 thus far. I cant wait to cancel the last 2 after I get to cancel this contract. Vodacom here I come. MTN you are far worse than Telkom use to be...