WORST SERVICE PROVIDER WITH CONSULTANTS

On the 4th of August a sales consultant phoned me to do an upgrade on one of my numbers: ********** 075 on the 11th I received a email saying everything was successful. I still have not received the phone after how many phone calls MTN has billed me for the new phone I have two refrence numbers still no luck each time I phone the consultants are so rude I orderd from MTN dIRECT NOT them they cannot check into the matter but the same MTN has billed me, I spoke to NQOBILE REF NO: ********** 37 on Friday and we almost at the end of day but still no contact was made, I was also given the courier company contact number with a tracking number ********** 700 which they also cannot track. in a few days my debit order will go of where I have been charged for something that I don't have, how can you charge a customer for something they don't have, I have sent an email to the customer care and attached statement did not even get a phone call I a m so frustrated I actually don't know what to do should I stop my debit order or what.