MTN Cannot Help SimSwap a 20yr old Loyal mtn no.

My mother has been using MTN cellphone number ***. I remember at the doctor having an operation and asked for my mother's number and I couldn't remember until I remembered and said ***. Everybody was surprised that it was such an easy number that I forgot. That was 2004-5! She has been using the same number ever since! Until this year, when the sim card stopped working. She took it to MTN and they said the sim card was damaged and she bought another sim and tried to sim swap to no avail. She was sent messages to go to the nearest branch. She was not assisted in Queenstown were she resides and simply told to reattempt after waiting a couple of days but such never helped. During the holiday we also attempted to fix the issue and went to MTN at Centurion. We were told we needed an affidavit confirming ownership of the sim while there's rica n ID. We supp**** all the documents requested and my mother was told to remove her sim card and wait 24hours from Friday 6th Jan 2023 and the sim swap was successful. It is now the 8th Jan 2023 and the sim swap is not successful still. My mother was has been a loyal customer for so so so many years buying airtime to smsz to the new age of data with the same number for years and years. She only simply wants to continue being loyal and continue to use her number ***. Can MTN please please be loyal to its Legendary Loyal Customer and just help my mother successful sim swap the number ***! She can simply change her number change her details with all the people and places but she didn't want to but well she can. But I swear to you if MTN does not care to help, I will throw away the current MTN sim which she cannot sim swap with and I will get her Vodacom o Telkom. MTN network coverage is lacking in her area anyway. I will help her change her details with her bank n other places update the people she needs to update and I will get her to use Vodacom o Telkom I swear it on my life. See principles are important. I hope MTN's principles include providing the services they promise! Assist 2 sim swap and not play around while sim swapping will help them keep getting our business. MTN probably does not care about this but we do! We've been spending time going back and forth to resolve this. I hope someone somewhere does assist but disappointments happen and i will throw that current MTN sim card away by end of next week.