Game RCS are harassing me for an account I settled. I even sent a paid up letter but still they keep hurrusing me till date

I am fed up with Game RCS. I had an RCS account with them. I made my last payment in December 2021 after receiving a settlement discount from their collectors called MBD. MBD took months to send me a paid up letter, then I forwarded the letter to another debt collector called VVM who called me multiple times to pay an account I have already settled… and now I am receiving about 5 calls atleast daily from a company called Daly credit regarding the same account which I have settled. I will no longer buy anything from game due to this. NEVER!