Cancelling Membership Advice

Hello! I am looking for advice on cancelling my membership with a studio. I am currently on a 12 month commitment paid monthly. When I first started attending this studio, they offered more classes than they do now. Since I bought my membership, they have eliminated several classes from their schedule. The class times they eliminated were some of the only classes I could attend throughout the week, now there are very few I can attend. I reached out to the owner and it seems like I will be unable to cancel without paying a penalty. I understand they are a business but the services they are offering are significantly less than what I signed up for. I am looking for advice on how to handle this situation. Thank you.