RCS refusing with my paid up letter

I opened the RCS account at Game stores. I used my account until I defaulted because of the financial difficulties which came with covid. After my finances have recovered I negotiated a settlement with VVM whom apparently my account was handed over to by RCS. It has been close to two months now after I have settled my account and RCS and VVM are refusing to give me my paid up letter. The defaults are still listed on my credit record. I cannot do anything. They are also refusing to refund me my money since they fail to give me a paid up letter. Both of them are sending me from pillar to post. I emailed the on *** which is the email I was interacting with them before I did the electronic transfer now they are ignoring my emails. When I telephone them they ask for my details and promise to get back to me which they never do.