My client is really restless at night and expects the caregiver team to rub his legs and feet for hours at a time HELP

He will scream and yell at me and tell me what am I paying you for you don’t do anything and be very verbally abusive. Every time he needs something I am right there ready to assist, but I am not a massage therapist and I am hurting my shoulders and hands rubbing what should I do??? Who do I even complain to? I am an independent contractor and I’m at a loss for words and my company that I work with has nothing to say about how he treats us. It’s getting to a point where he is acting like he is going to hit me but he is in his right mind and knows everything he is doing and in control of all his decisions. What do I do? Has anybody else had this issue? I need help or some type of advice. I need to know my laws and how far I can go with this my company is very aware of how he treats the caregivers and refuse to do anything I have went through burn out and horrible depression he’s so terrible that he has made everybody cry by his harsh words HELP and there has been over 20 caregivers in and out of here because he fires everybody if it doesn’t go his way and threatens are job