RCS has the WORST CUSTOMER CARE EVER!

My Coricraft Account was closed in Aug 2021 and updated accordingly on the Credit Bureaus. however, there is a phantom account on my Credit profile that has been added by RCS for Coricraft. when i called the call centre, i was advised to send an email to an email address (***) that does not work with a request to update my profile. I was then told to send it to *** who then responded with a paid in full letter for a Game Account of a Ms R Naidoo - who is clearly not me. Had i known that the RCS group has such awful customer service, I would have never gone near them. This phantom account they added to my Credit profile is having a negative impact on my credit rating/scoring and RCS shows no sense of urgency as they cannot even give me a turn around time. I need this to be Sorted out immediately!!!