Bad service, duplicate account and not updating payment history on credit profile

I am not sure how DMC operate but god knows I have been patient with them to update my profile and remove the duplicate account on my name. They buy accounts which are already paid and they will call you non- stop and when you answer they say they will get back to you which they havent. I am now being told about an account which I have paid already but they haven't fix the 1st problem of updating my payment history and the duplicate account on my credit profile. Their agent are very rude and all they say is that "your matter is escalated and progress will be send via SMS" Can someone call me or rectify my profile.