MTN - NO CUSTOMER SEVICE

Shocking service...upgraded both my kids cellphones about 6 weeks ago. This was done online because I thought this would be easier than going into the store...OMW was I wrong!!! The cellphones have been issued to DSV couriers (their provider) a month ago already. They were trying to verify the delivery with my 15yr old daughter who just uses the phone and is not the account holder. I have phoned the courier company and MTN about 20 times to try and resolve this. We have not had 1 return call after many many promises to resolve this issue!!!! This is now the second upgrade we have done on both phones and each time it is like pulling teeth!!!!!