Poor customer care

I write to show out my disgust for being a loyal MTN customer all this long, maintaining and having accounts I have paid up and kept well up to date until they mature. I recently asked that one of my numbers which was on contract and had its account mature be moved to a prepaid number but am told it cant be moved simply because I have to prove am the owner of that number. my first question is wen that number was a contract number you were happy to take my money of it and not for a day did you question me about being the rightful owner. now that m asking you to move it to a prepaid number there is a problem. why MTN are you treating me like this, I still even have many contract numbers m paying under that same account number were that number is from and suddenly its not mine.<br> <br> I still wait on you to make things right with me.