Membership cancelation

Last year I signed a contract for 12 months. After the 12 months I went in to cancel my contract but these days you must call the call center to cancel it. Then it took me a week to get through to the call centre and they told me I have to send an email. I di just that I they contacted me and I told them that I don't want the contract anymore because I'm a student and can't afford it and the call center told me that is fine they will cancel my membership. I then got a conformation email that said my query has been dealth with. I then went to the bank the cancel the debit order (and it is R70 to stop it) and them a month later the finacial advisor calls me from Planet fitness and says I owe them money. I told her that I canceled my membership and she said she can see there was a request but is has not yet been completed and I have to send her the emails. I sent the emails to the email address and they never responded. Today 3 months later I get a debit order of R246.00 that is not even my monthly fees deducted. When I went to the bank they told me planetfitness used a new reference and amount and that is why it went through, so to stop it I need to pay another R70.00. The service is absolutely terrible and I actually think it is ***** because they deducted a random amount from my bank account.