Cancellation

<p>Since August 2016 I tried to cancel my insurance on a phone I no longer own anymore. I initially cancelled it in 2013 when I got a new phone, just to find out it was not cancelled. So in August I canceled it again an till today they are deducting money. Every month for almost a year now Im phoning then they tell me it's cancelled and will refund met the next month, when next month comes, they deduct the amount again. I even received an sms confirmation every time I phone to tel met it's cancelled with immediate effect. Today I phone again and now they tell me there is a problem with my account? As it is my problem?! Please help</p>