Inability to Change from Contract to Pre-Paid!!

What a mission to change from contract to pre-paid on a contract that had EXPIRED 3 months ago!! Then they say phone 808, but the old sim card doesn't fit in any modern phone, then George branch gives ANOTHER cell number which you can phone from any phone - HAD they given that to us the previous TWO times I was there - it would have helped - but actually NOT, as it turns out all you need to do apparently is EMAIL!!!! Oh that fictitious email that no-one actually replies to. Its so easy to get a contract but once your two years are up and all you want to do is change to pre-paid it becomes NIGHTMARE personified!!! I cant wait for my other FIVE contracts to be up because I am for sure going to cancel them. Oh Wait - yes ... I CANT EVEN DO THAT!!! MTN you are TERRIBLE!!!!