Poor Communication and debit my account without my permission

I cancelled my membership with plannet fitness on the 16th on March 2020 and an email was sent to me for confirmation followed by a phone call confirming if lm cancelling and l said yes. The last debit ored went though end of March and l was okay with that, now 5 months after my cancellation they have started debiting me telling me that the vitality contract is 12 months yet we ran away from other gyms that have contracts and Planet Fitness reps tell you that you can cancel anytime.Planet Fitness please stop debiting my account as l cancelled my membership this is my cancellation reference number PF*** l need this sorted out ASAP.l do not owe you nothing when l cancelled you should have told me this but instead you went ahead and cancelled you are costing me money reversing your debit orders.