Mercedes-Benz blacklisted me without thorough research and they don't want to take responsibility

last i wanted to buy a car at Nelspruit Mercedese-Benz. I was communicating with the salesperson (Ms Sibanyoni)electronically, and i sent all my particulars to her. I did not buy the car because it was too expensive. i was shocked this year when i was denied a little loan by a bank. they told me that my ID number had been tagged as *****ulent by Mrecedes-Benz. I then call them and i was told by Hrsha Bhikha from Mercedes that they tagged my ID because they saw some inconsistencies in my pay slips. They then advised me to call South African ***** Prevention Services (SAFPS). SAFPS sends me back to Mrecedes-Benz; i have been sent back and forth since the beginning of this year. My concern is that why didn't they ask me or call my employer to check the inconsistency before blacklisting me. this issue is costing and affecting me a lot.