Continuous debits from Planet Fitness

I am so sick and tired of Planet Fitness. I signed a 1 year contract in March of 2018 which expired in March 2019. For some weird reason this company is taking my money without my permission. I have called countless times and have spoken to the manager who has made empty promises. This is complete violation and abuse. Why am I they still debited for months I haven't signed for. I am tired of going to the bank to reverse this. Please!