Cancelled and yet account still being debited

I sent Jbrooks proof of payment for the cancellation of my tracker and waited for her to confirm cancellation. Yet, I didn't receive anything from her and had another tracker debit order has gone off my account. This is why I reffered my mother to a different tracking company as even after leaving messages and sending emails I am yet to here from miss Brooks. <br> Membership number CLI***<br> <br> <br> <br> <br> Thanks