What to do if a security company is making you work up to 80 hours a week but don’t pay for OT?

So just a quick question about my situation. So in Houston TX I’ve been doing almost 80 hours per week and total for 2 weeks I would have at least 140-50 hours, and this owner od the company is paying me a salary od $1000 that I never agreed to and never spoke about that. I’m probably looking to take them to court for this, I’m being given a personal checks instead of pay stubs with tax deductions and all that stuff. He’s not even paying me on time, I have to call and text him most of the time for 1-2 weeks so he can give me my money. I had enough of them since it seems that all they want is free work from people and not even reporting that to the government. What should I do? Thanks.