re: Check Cashed in Error

This isn't the bank's issue, they did exactly what they should have here. If you want advice on this issue, ask an attorney. Personally, as the facts are presented here, I'd send a USPS Registered letter, (return receipt requested) to the nimrod fully explaining the situation and requesting immediate full repayment. That will cost you <$15.00. If you get it, write off the $15.00.

If another week goes by with no remedy, go up the chain to the District or State level chair and give them a phone call first. If no quick solution (including your cost of your first USPS Registered Letter) is not effected, send them a Registered Letter, with a bill including both the USPS costs and the original amount and threaten legal action.