1) Defamation--defamation is the public making of *false factual* assertions; that means that if the assertions were true (e.g. it's the second time there was a repossession) or were opinions (e.g. "he's a dumbass"), there is no actionable defamation. Only if a false statement of fact was made, would there possibly be defamation.2) Assault--any unauthorized contact or touching may be assault. However, in terms of suing about it, only if you suffered some injury (other than to pride) or damage would it be worthwhile bringing a lawsuit. You could try to report this to the police, but there is a good chance they will not take action on something this minor.In short--you were treated badly, according to what you wrote, and it sounds like you deserve sympathy. Unfortunately, the law might not provide any legal claim you could meaningfully bring.