RCS not performing due dilligence when opening a credit card

*****ulant account opened in my name in September 2019. After many unsuccessful attempts phoning my bank FNB (savings account) from where deductions was made for unknown account and Mercantile bank to who payments was made to find out what deductions was for, I eventually did a credit check on myself in January 2020 and discovered it is RCS Money Credit card who I immediately contacted and requested to block the card. I sent the required affadavit and copy of my ID the following day. I thought it was resolved until I app**** for car finance now to discover it is still loaded against me as a defaulting account. For the last 2 weeks I've been trying to get it taken of my credit profile but I'm giving the run around and different stories everytime I call to follow up. When someone tried to open a credit card at ABSA and Nedbank using my credentials they made the effort to get my correct contact number and called me to enquire whether I'm opening a credit card account with them and I told them to block any attempts to open an account as I'm happy with bank Standard banb and don't intend changing banks.