Don't Care About Your Complaint

This is the third time I have made a complaint against FNB regarding there complaints department and also there COVID relief cash. The first one was on the 1 August 2020, I received then a "high priority complaint" SMS (***) that someone will contact me withing 24-48 business hours, but nothing happens. I then made another complaint on 18 August 2020, I also received a "high priority complaint" SMS (***) with also 24-48 hours. Its now the 23 August 2020 and still nothing. I tried calling them and finding out what is going on due to that this cash relief hasn't paid my cheque account or the overdraft thereof. The secure chat and customer help on the telephone just tells you to call that department directly. There is no way you can get through you just wait forever, I don't know how to resolve this matter and it really seems they don't care about your complaint, even if it is on Hellopetter.