We may have the answer to your question in the following FAQ:
Just click here to goto your account page. Scroll down to "Subscriptions and Payments" and you can change any plan you want to. You can cancel anytime. Once you cancel, you will lose access to courses and the forum.
Please use the form below and I'll get back to you ASAP.
If you have a question that isn't answered above, please use the form below. I will get back to you ASAP, Monday-Friday, 9am-5pm UK time.