MTN number suspended without explanation

I requested a migration from contract to pre paid on the 01 July 2020 and it was not auctioned as emailed to them (*** Dept) and telephonically. It was then resolved on the 13 July after I called them again. From the 14.07.2020 I could not receive calls on my number, sent them an email, to date no response. Called them on 083135 and was told to dial some number with 0000 and my number will work and still did not work. I called them again I was told to make a Sim swop and my number will work again and that was on the 20.07.2020. After a Sim swop I could only get sms'es and dial out but when someone calls in it says invalid number. Went to their Rosebank store yesterday and they sent through an email regarding the matter. Till today I cannot receive calls and MTN is not advising me as to what is the problem. Been using this number from 1998 but now I am asking myself why I should still be loyal to a business that does not give answers to clients