RCS POOR SERVICE

I have now had it with RCS. I opened a Builders Warehouse account which is administered by RCS. The account was opened on 13/14 July 2019, which means the account is not even 3 months old. I made 2 purchases on the account. Since commencement of the account I have already made 4 payments as I keep on receiving telephone calls and emails stating that my account is in arrears. Every time I am told to forward proof of payment to either a whatsapp line or email address, which i have now done about 10 times. And still my account has not been rectified. I have also not given permission for debit orders to go of off my banking account and yet I am told that the debit orders are reversed by my bank, no need explaining that my bank reverses it because it is not authorised. The service provider, Builder Warehouse has also tried to resolute the matter with RCS without success. And low and behold I just received another phone call now telling me that my account is in arrears, while in fact my account is now paid upfront. It is the worst service ever from a credit provider.