A nice guy called me on this number (03) 9225 2095 from National Credit Management but our line got cut off

Got a call from this number, I missed the call and called back, a nice man answered the phone but I missed it when he told me what he was calling about. When I told him I missed a call and I didnt know what about he said it could find out for me but asked for an account number. Account to what I dont know, thought it better just to hang up