Voice Mail issues for 2 years

Email Reference : #***7<br> Since signing up for my contract with MTN 2 years ago, I have voice mail issues. 1st I wasn't able to save a personalised voice mail. They deleted and reactivated the mailbox and finally in the middle of last year I was able set up a voicemail and retrieve voice messages. <br> <br> My issue now since 7/07/2015 - is that I do not get SMS notifications when a voice mail has been left. I have been in contact with customer service over the phone, via email and have even been into the Norwood branch with no success. No one from MTN has bothered to contact me to resolve this issue, I am being pushed around from customer service to branches. Someone with a technical understanding needs to contact me please.<br> <br> After all of this, MTN still then have the audacity to charge me an upgrade fee even though I am spending more with them each month now. This is totally unacceptable...