Dont use MTN as a service provider!!

We are on a business package with MTN. We have two cell phones on the same name on the same contract. On the 4th February we upgraded our package for both phones with the business call centre. On the 4th February I was told the upgrade will take 5 to 7 working days. We received an sms from mtn confirming our upgrade. On the 10th February we received one cell phone. When I contacted the call centre to ask when to expect the other phone I was informed that they are waiting feedback from Administration. After numerous emails and phone calls to Etienne Nel (CC Manager), Calvin Madondo (CC Manager), Thandeka Mcunu Sales Administrator I am still awaiting my upgrade. I receive emails to confirm that they are waiting feedback from MTN management. Nobody can tell me when I will receive my phone or why we are waiting for MTN Management. I have requested them to cancel the upgrade on Friday morning - I just followed up to be told it will take time for cancellation, but they cannot confirm how long. So I have no upgrade and no cancellation yet received one phone on the contract and NOBODY AT MTN CAN HELP! I have gone to two MTN stores and NOBODY CAN ASSIST DUE TO BUSINESS DIVISION.