Terrible service Mtn and it is not the 1st time

Hi, I have had my MTN contract for over four years and it's under my partners name, I went to do an upgrade at the Mtn in Mall of The South and we were assisted by Thabiso Moerane, at 1st we didn't win they needed to verify my partner because of his ID card looked different, we were sent home and will be called to come back. We were called and when we got there he hadn't done much and he was busy with another client and asked to be assisted by someone else because we had been there long. Eventually all was sorted and we left, we transferred everything from my old Samsung to my new Samsung and the new one would not take any of my passwords and wouldn't backup anything, it was late at night we had to wipe the phone and re start everything, that worked except for the eSim as the QR code had expired. We went to the Mtn at fourways and they requested a new QR code and were told we will receive it in 24 hours(only because we had to attend a family thing in fourways). Came Monday and nothing, call center told us we have to go back to Mall of the South, mind you I am in Roodepoort and my partner is in Midrand ,we work there.he went to Mall of Africa and they helped him, eventually today on the 10th of April a QR code was emailed to him at 20h30 and when we tried it so many times and it kept telling us it has already been used. So they sent us a USED QR code,after all that trouble, 6 days,3Mtn shop visits and call center

So it's been since Saturday the 5th of April to the 10th of April and the issue hasn't been Resolved by Mtn. While their last email to me said the issue "has been resolved"