MTN - poor customer service (again)

Once again MTN customer service sucks - for the last three months their 3G data connectivity has become so bad where I live that it is virtually useless for me trying to work from home. Have they got to the point where they are selling (or giving away) more data than they have? I will consider myself lucky if I can complete this review without losing the connection. This problem is not unique to me, numerous customers in our town complain about it on a daily basis on Whatsapp groups, which needless to say doesn't do the MTN image any good. I logged a customer service call (online on their website facility for coverage problems) on 8 June 2020 and received a call number *** by return email. The response also indicates that ten working days should be allowed for the call to be actioned and that they would get back to me. This never happened and on 23 June I logged another call for same and received another call number ***. Once again no action taken and today is 28 July 2020 and the problem has not been resolved. Also no response from their customer service at all. I subsequently have to assume that the problem is not technical and is due to tower load i.e. too little bandwidth with too many users. If this is the case then I am of the opinion that MTN should allow their their contract customers, like myself, to end their contracts without having to pay penalties for early contract cessation. We can then move on to alternative service providers. If MTN are happy to take my monthly subscription then they should provide what I am paying for and not just ignore the issue, it wont go away on it's own.