Anyone out there to help?

I have laid a query regarding transfer of 4 numbers on to prepaid, after the death of my parents. They cancelled the numbers completely. I have been to 2 MTN stores, sent numerous emails to MTN customer care, retentions and now legal. Still no response. I have been on the phone for over 30 minutes holding on the line with very bad music, just to be told they will escalate it. I have now had no phone for over 6 days. I would love to know what you need to do in order to get resolution from this service provider. We have been loyal customers for over 20 years. The automated response says they will revert within 24-48 hours. Im no longer waiting patiently!