How difficult is it to cancel a gym membership???

After realizing that the 24 month contract he had signed up for has doubled in monthly membership fee, my husband decided to cancel the contract. He was told that a cancellation fee was payable, and once done, proof of payment was to be sent and the contract would be terminated. This was done yet the following month a debit order was deducted from my husband’s account. He was understandably very annoyed as the cancellation fee had been paid the previous month and proof of payment sent as requested. He called the call centre again and was told that they assumed the amount deducted was for the membership fees for the month, the call had since been closed as resolved. He was asked by another agent to resend the proof of payment and was promised that he’d be called back the same day. No call nor email confirmation that this proof of payment was made till today. Customer service at it’s absolute worst!! Membership fees were paid timeously every month yet when the membership is cancelled it appears that there’s no one able to assist?! Planet Fitness you need to take a serious look at your call Centre and the customer service you offer your members. You’ve definitely lost our business for life!