MTN Supersonic Fixed LTE pathetic technical support

I have a fixed LTE broadband contract from MTN Supersonic. On Thursday 30 June 2021, my internet service went down. It is today 6 July 2021 and it is still off. I already spent more than R300 in airtime, sent emails, yet no joy. Their excuse is that the sim card needs to be reconfigured by management. Now apparently this member of management does not work too often because how difficult can it be to re-configure a sim card. They do not report progress and just seem to do not care at all. Also the cell number of the sim card suddenly comes up on Tue Caller as belonging to a certain Florence. MTN Supersonic has the worst Customer Service and a useless Technical Department. Stay away!