Pathetic service with upgrade

I lodged a complaint with MTN after multiple attempts to upgrade my contract with a specific handset. I did this on the 11/08/2025. They keep telling me that they do not have stock when their competitors have the same handset in stock.

I have been a client of MTN for over 25 years and the fact that no one can assist me is absolutely disgusting. A "Karabo" person rep**** to my complaint on 25/08/2025 only asking which device I was looking for. And guess what... no further reply except for the system generated reference numbers, and we are now at the 9th of September.

Must I then port my number to Vodacom and get the handset I want from them?