Refund And Immediate Subscription Cancellation - MoboReader

I have been experiencing a serious problem with my Moboreader app subscription since 10 September. Despite my attempts to cancel the subscription, it has not been cancelled and I am still being charged. I have followed the instructions given to me, including trying to cancel through the app and contacting you via email, but none of these channels have provided a helpful or effective solution. I also have emails and charge receipts that show both my attempts to resolve the issue and the ongoing payments. I request an immediate cancellation of my Moboreader subscription and a refund of the latest charge that was taken despite my efforts to cancel. I kindly ask you to review my case and resolve this issue as soon as possible.