Can't receive calls from MTN

Service request S3-8G42V-V7U8Y a week ago. Get told to wait 2 days for query to be resolved. Receive an auto-closure message with instructions to manually select an alternative carrier, reboot and then re-select Vodacom as carrier. Problem still persists. Call back, get told to wait another 2 days, same auto closure message from same person, same result. Ground hog day. Please can someone fix the problem and resfund my subscription for the month because you definitely don't deserve it!