Stop in for a cup of coffee

I tell ya, I see why people are leery of banks. I wrote a check to an acquaintance in Georgia to haul some stuff. When he cashed the check, his credit union somehow "piggybacked" someone else's check for $644 onto that check and got that amount out of my checking account! My bank figured out which bank it was, and called them, but now I have to try and straighten this out myself. Meanwhile I'm $644 poorer. Good thing I even noticed this so I could transfer funds out of savings to cover my rent check! Scary that this can even happen.

Edit: my bank called and said they've got it taken care of. Glad they did because when someone messes with my money I get very agitated.