Continual Debt Collection calls 6-8 a day sometimes

I was eleven days behind when I started receiving numerous calls, automated calls, demand for payment, even when I let them know I would be late I would still receive 120 calls in two weeks. I had a witness on the phone. A lot of the calls are automated. The reps are quite demanding and rude. Even when they make a mistake they call repeatedly with demands. I offered to give the car back to get out of the intimidation and fear, mental stress, chance of heart attack or stroke because I am older though no one should endure this type of abuse. I mentioned when I go late with other companies sometimes I don't hear until after 30 days late. I am running behind and Chrysler Financial is well aware of this. I asked either take the car or leave me alone. My cell phone time is being used. I don't answer my phone and sometimes have to shut the phone off. They call at work even after I tell them I am at work they continue to call. I have spoken with supervisors, sent a letter, requested the calls to be stopped. Regardless of whether I am on time or late I do not deserve to be abused. I make online payments so I have the confirmation. I will never buy from Chrysler again and neither will my family.