Generally they don't have to offer breaks and can fire people for no reason, but their wage theft is very illegal. Keep records of what's happening (photos, notes, recordings, etc) and talk to an employment lawyer. You can almost certainly find a lawyer willing to give you a consult for free and take the case on contingency, meaning they only get paid if you win. The law permits you to get 3x damages for the wages they're stealing, plus they have to pay additional money for legal fees.