POOR, POOR SERVICE!!!

I’m very disappointed with the poor service I have been given by MTN for the past 3 weeks. I was due for an upgrade on the 15th of this month but I was sent a message that I can do it earlier. I went to their branch at Centurion mall, firstly they did not have stock of the phone I wanted and I ended up taking another one. Then there was something wrong with your system, I went there for 3 consecutive days my problem was not solved, I had to cancel and start afresh online. I did the upgrade online, a lady called and everything was processed. I have not received my phone even to this day, when I called yesterday I was told there is no stock of the airpods I wanted with the phone and that’s why my order has been delayed! Why advertise something that’s on your catalog that you do not have stock of? I am angry and disappointed, and still waiting. I sent an email to their complaints department, one has called me, yet I’m a paying customer. I will not be upgrading going forward because this is just ridiculous!!