UTTERLY DISGUSTING MTN SERVICE

I am disgusting with MTN. I have been struggling for 2 weeks to obtain a paid up/prescribed letter for my old MTN account A***. I have called the call centre and asked them to transfer me to the legal team to assist with the letter and everytime the call drops or they advise me to email. The email advised the turn around time for response is 48 hours...this is ridiculous. I need someone to call me urgently to resolve my query. my contact number is ***.