MBD Very unprofessional bordering on harassment , debt collecting using the wrong number

Repeatedly receive calls for an account I do not have , Agents are extremely rude and hang up when asked questions , No managers available , landline calls to query aren't picked up and my number is not removed from their system , They refuse to tell me how they have my number or any details about the account they are querying because I am not the account holder , So I'm being phoned for an account they can't give me any details on but won't remove my number !!!