EOS Fitness review: cancellation

I was hurt on the job at the time of training with eos fitness.. I went in and spoke with the managers of the personal trainers and gave him paper work where it stated that I have a limit on any lifting, pushing and/or pulling. They still made appointment date with the trainer and I still got charged for them. I did inform them that I was not going to be at these training sessions due to pain. To please cancel my membership. (I had a neck injury. It was the second injury I had in less than two years)
So any who im getting charge for the trainer portion of the membership because I did not give them a letter of disability. And that is they only way to cancel. Now they want me to continue paying until I have finish my training agreement. They only cancelled my gym membership so they say. Im still getting phone calls. Managers give fake names when returning my calls and gives me the run around a lot.