Sounds like scare tactics did he even have legit ID!!!And why was he alone?
^^ This.......... I had this problem when i lived in a house share for a unpaid phone bill dating back to 2007, which had been paid but the collection company hadn't been updated on. All he done was list my belongings, didnt add my car or laptop as i needed both for work and college commitments. He shouldn't of took any money or forced you in anyway, He should of talked you though the process of whats going to happen next, Set up a direct debit and so on, he also has to list the possible possessions to take if it wasn't paid in full or you failed a direct debit.
Sounds a bit shady to me.
Mine was sorted after a few weeks after showing bank statements and various documents as proof.