Nimble Group *****ing Peoples Money And Damaging their Records.

This company is the worst of the worst people should start checking their credit profile, i looked into mine i noticed there was an update under my credit profile that states i owe this Nimble Group money i don;t even know, i have never done any dealings with this people or anything i mailed them no reponse even trying to contact them via whatsapp they confirmed am not even in their records but i owe them which Ombusman do i report these *****s ?