DMC **********

I have 4 Dmc accounts appearing on my credit report, of which 2 are closed. I have never received any letter nor a call from this company. My credit report was clean till this particular company listed itself. It is really affecting my credit worthiness as I can't take out any credit due to '' missed payments '' from 2018.How does one miss a payment on something that they don't know and can't even trace? Can thts DMC please remove itself from my report