Alpha Debt Management bad service and unprofessional.

Can I get help getting hold of this company Alpha Debt Management. Because honestly this guy made and agreement with them to pay my debt and that I will pay through them this was about 5 year ago and that will debit every so two months past after the the agreement this guy just debited not paying so when I got a call from the creditors I tried calling them to get a the answer why am I still getting such calls they were telling me stories now. I them blocked them and paid all my debts with agreement from my creditors and finished paying so the Alpha Debt Management company still flagging my name can this please be corrected.