I got debited after I cancelled

On the 24th of Nov 2015 I put in notice to cancel my account which would have meant that by end of December my contract would be cancelled and I would no longer be covered.<br> <br> I was surprised when a got debited in December and I sent a mail to the customer service at Netstar and there was not response from them for about two weeks. <br> <br> I finally called the call center and the person I spoke to couldn't explain to me why but apparently I was still covered for January as well and he kept referring me to the terms and conditions. He refused to let me speak to his superior or someone else that would offer a better explanation or resolution.<br> <br> I would like to understand why I was debited or my money return to me and the Customer Service really sucks especially when it comes to cancellations.