You manage your subscription yourself in your portal via View treatment > Your subscription. There you can:

Your subscription stops and nothing further will be charged. The month you've already paid for continues as normal. Until the end of that month you can keep using the chat with the medical team and the guidance.

You'll get your money back via the same payment method. You don't need to do anything for this. The amount will be in your account within 5 working days.

No. Prescription medication cannot be returned, even if the packaging is still sealed.

Would you rather pause for a while instead of cancelling? You can also pause your subscription. You can continue again later without having to start over.