RCS /Edgars account don't care about their customers

I have an Edgars/RCS account, I owed R5250 the balance. I'm receiving a statement every month to pay minimum installments, so on the 07/10/2025 I got retrenched from the store I was working for because it closed down. I app**** for Account Protection Plan(APP) from the company called IUA business solution, so every month IUA will take money for APP from my account to assist me in case something happens. IUA emailed me on the 23/12/2025 and attached a letter stating that my account has been approved for R4802.. The problem now RCS says the payment is not reflecting on their system. I have been suffering from these two companies IUA and RCS I've been following on this matter for months now. No one is willing to assist me with anything, when I call IUA they say the paid the account, when I call RCS they say they want proof of payment because on their side is not reflecting. I have been using my money to pay the installments on the account and also I'm using my money to call them all the time regarding this matter. The question I have is where is the money that was paid by IUA because it didn't go to the account? and another one is, is it my job to make sure that two companies working together they don't communicate to meet customer's needs. I'm tired of fighting, now I'm owing R4600 Iam paying every month and I'm not working, is it fair for me to be paying the account that was supposed to be paid long time ago.So so disappointed with RCS account I must say, they don't care about customers at all, money is important to them more than anything, who brings the money to the business if you don't take care of your customers. Preaching customer service that you don't deliver is something else. In April Iam still receiving statement from RCS.