Bad MTN service

On Monday 23/07/2018 me and my husband was assisted with our upgrades via phone with mtn direct. We were advised that the devices would be delivered on 26/07/2018. Which we knew was too soon. Today on the 31/07/2018. His device is being delivered. I phone mtn direct to find out what is happening to mine. Seeing that we upgraded on the same phone call. I was send from pillar to post. After 5 emails to the consultant nobody has come back to me. This is the thank you for being a loyal mtn customer for more than 7 years. After ample phone calls to the call center a feeble excuse is made saying there is no stock. Oh what a coincidence after all me and my husband took the same devices. There was stock for him but not for me?. Why wasn’t I told that stock was out of order while I was on the phone? Why wasn’t I phoned to say there isn’t any stock ect. Should the customer be the one doing the investigation as to where the device is? Isn’t my money just as good as my husbands? Sick and tired of bad service but you pay a lot of money!!!!!!!!!!!