My company is a Taxi Company for Wheel Chair Clients. We work 8-12 hours, no lunch, no break. No Vacation/Time off. unemployment if I quit?

My company doesn't allow me to have lunches, or any time off. I've been there over a year and have been fighting for even unpaid time off. I feel this should be considered a good reason to Quit. They are breaking the law by making us work Over 6 hours and Driving. At what point does driving 12 hours non stop with Sick clients not considered a hazard? They also make us carry clients up Stairs in a wheel chair, and they have never showed us proper training or Technique. To be honest... I am sick of it.