<prompt> Human: I am signed up with a local gym. They have my credit card info and charge me monthly. I requested to quit last week, only to find that on the first they had once again charged me their frankly absurd monthly fee. Fortunately for me, the card was declined.They claim to have a 2-week cancellation party. I can see no reason for needing the better part of a month to remove someone from a gym membership other than to fleece out an extra 150.Its absurd, so how can I prevent them from using my card information? Their first attempt was rejected and I see no new charges pending, so I want to move quickly.Legally, can I do this? Can they sue or what? In the USA. I did not want to ask my credit card company until I understood my legal situation.EDIT: I believe that I did sign something, but practically what can they do? Sue me for 150?  <response>: Depending on what contract you signed for membership, they may be able to send you to collections. I would ask them for the signed copy of membership agreement. 