MassMart/Builders/RCS Payments departments not doing their jobs.

This is my second complaint on HelloPeter about the Builders/Massmart payments & customer services departments. I have made payments, and sent on more than 1 occasion proof of said payments, which to date have not been allocated to my account. This has gone on for more than a month. I understand Covid-19 staff shortages, but all it takes is for 1 person to do their job. Unless ofcourse someone has misappropriated my payments and can't. In the meantime my account is blocked, due to non payment, my credit record is no longer positive - all because someone is doing what needs to be done. This morning I called customer services again, and they put the phone down on me, after having used the Covid-19 excuse, which I'd have accepted for 1 week delay, BUT NOT 1 MONTH. And now Head Office is closed to I can't take my problem to the top of the chain. I just want my account credited, charges for late payment and letters demanding payment reversed and the account unblocked. Is that too much to ask?