Yes that is perfectly legal.............................

Yes........................................................

It is already a felony warrant. Time to lawyer up.

Frankly, there probably isn't anything you can do. It is their platform, and they get to set the rules.

You are missing a lot. It sounds like you are in way over your head.

See if you can find a lawyer to take your case. You will need to fund an expert who can testify that there was something wrong with the product.

I don't think concrete is refundable but perhaps your sales contract says differently.

It would be inappropriate for the police to share details of their investigation except as they determine necessary and proper.

It is hard to put a monetary value on all of this but yes you can sue her in small claims court. Same thing happened to my son at his rehearsal...

Your employer can fire you for any, or no reason just as you can quit for any, or no reason.