Poor MTN customer service

MTN customer care is totally useless.Dont respond to mail sent. Sent them a mail regarding a migration which has been done around 12 or 13 June 2022. No response.phoned customer care . Answer was still investigating. Wanted to do upgrade. Spoke to an MTN agent at Centurion. on 10 June 2022. Said the upgrade will be done on the 13 of 5his month. Will contact me. Didnt contact me. Tried upgrading on line but it failed. No reason was given that the upgrade could not be done.Received a mail that i will be contacted regarding my upgrade application Still no comtact.