Can I bring a civil lawsuit against an employer that terminated me without cause and refuses to pay me?

Six months ago, I was told by my male owner, that his girlfriend and other owner was jealous of me. She wanted me gone that day. It was 1 week before Christmas and I'm a single parent. I asked if it could be discussed and try to work it out. I was told no. Her mind was made up. At that point I was owed just over $1,150.00 in back pay. On Christmas eve (one week after "firing"), the male owner showed up at my home and gave me $350.00 cash. I had spoken to the male owner several times in the next 5 months, asking when would I receive the rest of my pay. He always had an excuse, had to pay a bill, or a current employee, or a big delivery came in, or it was a slow week. A month ago he stopped having contact with me, by ignoring my calls/messages. So I sent a letter saying I'm still owed $800.00 in back pay, and I expect a response by said date (2 weeks from letter being mailed). I sent the letter, requiring a proof of delivery, they received it 2 days after it was mailed. I've heard NOTHING. Can I take them to court over this back pay? If so, how would I start that process.