area manager and complaints department - unresponsive

I have been an MTN customer for the last 10 years - i recently added a contract for my kids - they have been billing me incorrectly since June 2022 - this has also been confirmed with the store consultant - and my contract that was signed.

I then escalated to the area manager Anthony and also the complaints department.

I have not heard anything at all. Let alone the store being useless in assisting me.

Can I plead on here for assistance and to be contacted?

thank you