What should i do?

So I finished school 2 months ago and I'm starting an upholstery shop with a guy that I've known for a few years and is a family friend. I've been working here for a month and we haven't gotten much done. We have the sewing machine set up and ready to go but nothing else. For the ladt few days I have been making pursues with is mother. FML. I hate it and I hate it here. The guy is a reall a hole to work for and it's ruining our friend ship. He has a lot of money tied up in this and I don't think he has any left. I know that he is not paying the auto parts stores. I have been only payed $800 for a moth of work. I want to leave but I can't just walk out. I feel trapped.