Number disconnected without permission

MTN has disconnected my number without my permission. I have had several different explanations as to when it was disconnected, some being as of August 2019, some in March 2020, when in fact it stopped working on 2nd March 2021. I have been a loyal and paying customer for about 20 years. I have also been put on hold several times and been disconnected almost as many. If anyone has tried to call 135, they know that the average waiting time until a call is answered is around 20-30 minutes which has wasted even more of my time. Several requests have been sent through to have the number reconnected, but after each call (day after day) no escalation or progress has been made.

Furthermore, no one at MTN can tell me who disconnected the number or why.

I’m not asking for a lot, I just want my number reactivated.