RCS is useless

Did business with GAME in November 2020, one of the products was faulty, took it back, but GAME, to give me n new tested unit had to refund me on the return unit, then do n new deal. Thing is the refund was done on the 21 November 2020, to date refund not yet done. Get daily calls on why I have not paid the full monthly amount, told, that is not the amount, do the refund. GAME send mails, I send mails with the proof, spoke on the phone, send mails to complaints, but nothing! I just had it with RCS!