Bad service and dishonest staff

I have an Spitz account and RCS is the mother body or is the head office. That account was **********ly used in Durban, while I reside in Johannesburg in January 2020. I sent the required documents after I informed the RCS office about a sale that just occurred on my account and it wasn't made by me. Whilst that account was under investigation I am paying it monthly at the nearest Spitz store. I never received any progress regarding the case or feedback. The only time I call the head office and demanding any progress from the ***** dept, they take me from pillar to post. On the 1st May 2020,one of their consultants calls me and tells me that they never received any documents from me so that they can start with the investigation. I was furious and gave him hell that guy, the nerve to tell me that, after sending a sworn statement, my certified Id copy the works. I sent them again via my email. He never acknowledged receipt of those documents firstly. I haven't received any joy from RCS, the only thing they are good at is sending their collections dept to ask me when am I going to pay since my account is in arrears. Bear in mind I make a monthly payment, and have the receipts to prove it. In mid June 2020,this lady called me and told me that they don't have my documents to resume with the investigation, guys come on. I was shocked, i wanted answers from her. Someone is trying to sabotage my account and I am being disrespect and RCS staff is dishonest all of them. I sent those documents for the third time, she acknowledged receipt of those documents, I was told that this matter is about to be finalised and I will receive an outcome letter soon. They've been telling me that story for the past five months. Someone must be held accountable for this mess, i am tired of RCS head office staff. Their are *****. Now they took this account of mine to the debt collectors, MBD. The nerve of these people. I want to know why is that Spitz account sent to the debt collector's when I was paying every month on that account. Can RCS Superiors get to the bottom of this, your service sucks, and your staff is *********** to say the least.