Double debitting / Not responding to emails

Hi <br> <br> Please note that planet fitness has been double debiting me and when I requested a refund via email a couple of times I did not get replay and sent a cancellation and also did not get any feed BACK . and when I called their call centre one of their consultants said she will process my cancellation, today I have been told I need to pay R1500 maintenance fee and a cancellation fee of R260. I Had sign a 6 months contract and even wrote 6 months only yet my account is still be debited.