***** made in my account

I have account with RCS, I called their call center on the 09/11/18 to close the account I was advised it is closed some will call me with 48 hours, no one called till Wednesday the 21/11/18, I went back to game Johannesburg to find out, they asked me to call the call center, the consultant advised me my details has been changed, cellphone number. email address and physical address and someone to took loan on 13/11/18 amount of R20000, and again on 14/11/18 same person went back they gave R24000 to the absa acc and I do not have ABSA acc, I asked them why should they carry on doing credit on my account while I send request to close the account and change my details without, my written request, they asked me to do affidavit from police with my standardbank statement and copy of id

I want game to pull through all communication with them, how did they approve such huge amount without my signature