Almost three months and NOTHING done WOW what service

This company must have the most appalling "Customer Care" in South Africa without doubt, they are even worse than a municipality and that really is saying something, this is the THIRD time I have written the same story than has been going on since July and has still not been resolved one person tried three times then he gave up (about three weeks ago). Is it too much to ask for help as all I want is to be aable to check my data usage, the website says that my user name or password is wrong (even though I get it from them) and the Phone app say I have entered my 10 digit phone number incorrectly (I have had the same number for 18 years and I am pretty sure I know it by now and can enter it without a mistake, but it seems that to resolve this matter is beyond the capabilities of anyone who is employed by MTN, the best they can do is APOLOGISE and they really are excellent at do that because it is all they do