Unwanted Memership Contract

Signed up for gym when I didn't want to solely because your sales reps are annoying and don't want to take no for an answer. they came two weeks ago and I told them I wasn't interested, they came back again last week Friday(month end/busiest time in the month for any dealership) and the lady was adamant that she won't leave until I sign up. I had a lot of work to do and I had to sign up just so she could leave me alone. STOP COMING TO PEOPLES WORK PLACES AND FORCING THEM TO SIGN UP FOR GYM. We don't go to gym and force you to buy cars