I did freelance work for a guy with a start up company that constantly took advantage of my kindness for six months. He made it clear he wanted me to become a full time employee of his once he got the investment he needed.

He is the type that made a bunch of false promises to get what he needed from people. He's gone random weeks of not wanting to pay me so he'd tell me to take a vacation on Monday when I'm prepared to work and then return two weeks later even though he promised consistent work. He also ended up offering me much less than promised as a full time job with a small amount of unpaid vacation, 3 sick days a year, and made up ridiculous policies. And it's not like he had an HR department or established benefits yet so if I had an issue I'd have to deal with him directly. He's also been known to start arguments over minor things and can be emotionally abusive at times.

Luckily I got an offer with my current employer and happily let him know I would no longer be able to do with for him and I would not be accepting his (crappy) offer.

He was rude leading up to my final days. For example, my dad knows him personally and he invited us to lunch together as a sort of "thank you" to this guy. He showed up and instead of eating lunch with us, he started yelling at my dad in the parking lot for encouraging me to take this other job and that no one will understand me and put up with me the way he did (which makes no sense to me).

Also he's a narcissist but I don't even want to get into how he constantly comments from his business account on Instagram to his personal account about how much he literally loves himself.

Anyway I haven't spoken to him for a month, since he last accused me of trying to steal work that was still on his server, until he randomly texted me about something I have no way of knowing about so I assumed it was meant for someone else and didn't answer.

He ended up emailing me saying how I offended him by not answering him but he wants me to do work for him this weekend (no mention of cost) and is expecting an answer this time.

I really want nothing to do with him. I don't see how someone untrustworthy and rude can be a benefit to me in the future when I only did work for him for several months. I don't want him as a reference.

Should I answer him? What should I answer with? Does he deserve an explanation for me ignoring his text? Should I ignore him and then proceed to block this toxic guy?? How do I/should I totally fade him out of my life?

Sorry for any grammar or spelling issues. I'm on my phone.

TL;DR: toxic guy I previously freelance for reached out to first tell me I offended him and now wanted me to do work for him this works. I don't want to be involved with him at all period. How do I handle him professionally? Can I get him out of my life possibly?