They have been known to send letters even when you have a licence. Their salesmen (sorry, "Enforcement Officers") do not undergo criminal checks and yet they expect you to let them into your home. (You don't have to, of course.) Because most of their convictions come from confessions and because their salesmen are paid bonuses for convictions, they tend to prey on the single parents and the elderly, and tend to use underhand tactics, intimidation, and sometimes even criminal behaviour to get their bonuses.