small claims or revenge are the only options it seems
A lack of options usually stems from a lack of imagination.
You could just 'let it go'. Yeh, I know, it seems like the weak option, but try it; it takes some strength to do it in reality.
Saying that, I usually go down the 'harbouring a grudge and thinking of revenge route' before I let it go.
Another option is to go down the legal route, but still kinda 'let it go'.
I think the point I'm clumsily trying to make is that they've taken our time and effort, don't let 'em take our peace of mind too.