I've been paying for a membership for almost two years that I only signed up for one year of (TN)

I signed up for a gym membership almost two years ago that was only supposed to last a year, we went over the payment plan and he showed me the total I would be paying for over the course of a year and that is what I agreed to. However, I recently found out that they renewed my membership without my direct consent. They had sent me a renewal form at the end of the first year which I had ignored because I no longer wanted the membership. Looking back it turned out the "renewal form" email file they sent me was just a word document that said if I wanted to continue my membership "no further action is required" and they would bill me like usual. The account I used to make payments was one I use for mostly automatic bills so it was easy for me to miss the extra payments each month. The card I used to pay for the membership was recently replaced and I got an email saying I owed them for the missed month (that's how I found out I was still paying for it). And now they're saying I owe them 110$ for being late! I know that it was kind of on me for not noticing, but I feel like that was very deceptive on their part. Is there any way to get out of paying this? What would happen if I just ignored it?