Appalling service and negligence with our information from MTN consultants!!

I upgraded my MTN contract on the 21 when their sales consultant called me. I received the contract of the upgrade and a bank mandate that I had to accept for the new premium. Yesterday MTN cas me again and wants to upgrade the very same contact that I upgrade on the 21sy of September 2022. I told the agent that she must go back to their system and investigate. She promised to get back me and she didn’t. Another agent called me this morning trying to upswell the upgrade. I told her the very same thing, that how is it the system not showing that the contract was upgraded? On the 12th of October, I should’ve revived the new package and I didn’t. I still got the old package as per my old contract. Luyanda Ntombela assured me this morning that her colleague did not process the application after it was accepted, it was left hanging like that, she promised me that it will be done and I’ll receive an email and the new package after 24 hours. I haven’t heard anything since. This is appalling service and a big inconvenience. I’ve been with MTN since 2018 and I told her that if this isn’t resolved today. I’m cancelling the contact. I made sure to email them, call the contact centre but nothing has been done. Useless if you ask me!