DCM I don't know you - credit bureau sucks

I was listed on Credit Bureau for not paying DCM account. This "account" is 5 months in arrears. BUT this is actually a paid up Truworths account. Paid in full almost 3 years ago. I contacted Truworths and ITC. Instead of asking for paid up letter - which clearly reflects on Truworths - Ask DCM for proof of contract . There is none. But the credit bureau allows these people to get away.