They messed my life up

I had a loan with standard that was sold to third party(DMC) in 2019, I made arrangements with DMC who also opened an account on the bureau which they update every months, with my DMC account and all other accounts up to date, me and wife decided to buy a house, we were declined for finance and the reason was the Standard bank that was not updated by standard bank, it is a duplicate on the bureau. They have just cost me so much and almost my marriage. they need to to sort this out ASAP. wont let them cause me any further pain. I'm taking this to all social media platforms