MTN IS USELESS!!

MTN is nothing but useless. On the 20th of April 2020 I received a statement showing that I have not paid in 3 months. I got the proof of payments from my bank and attached it to the statement and mailed it to ***. I heard nothing. On the 22 of April 2020 my services was suspended due to "not paying". I could not get hold of a service consultant on 135 and I was without service on all 3 my numbers for 1.5 days. The next early afternoon I got hold of a service consultant eventually. She reconnected my service and said to e-mail proof of payments and that she will sms me her direct e-mail address (till this day I haven't received it). I eventually received a reply one and a half week later saying that they moved to a new system and accounts will be corrected. This past Tuesday the 5th of May 2020 I went to MTN to upgrade one of my numbers. After being there for almost 3 hours I was informed that there is an issue and they logged a query. I went home empty handed. Wednesday I was phoned by the consultant at MTN Alberton to say that it shows that my account is in arrears by almost R5000+, the same amount that I was quering. I sent through my proof of payments again to the consultant and she logged a query. Thursday I phoned to find out what is taking so long and she informed me that the query has not been resolved yet. Today is Friday the 08th of May 2020 and I still don't have any joy. I looked on my mtn app to see my bill and the outstanding shows over R5000+, the 60 days in R2200 and the 30 days in R6000+?? First of all if my maths is correct this does not add up. Secondly what the hec is the R6000+ in 30 days if I have a usage limit?? Also I still have not had any joy on the upgrade!! I understand it is lockdown but people are "working" from home. If they are "working" why is nothing being done???