I didn’t know Memrise was a recurring membership. I’d like a refund
I would guess you may wish to contact Memrise more directly than through the forums. You can do that by scrolling to the bottom of the site and clicking on “Contact Us,” which will take you here. I believe your specific concern would lead you to this page addressing refunds: 30-day money-back guarantee.
If that’s not accurate, I’m sure one of the staff, such as @Joshua, could correct me.
Please note that Memrise Pro is a subscription-based service - https://www.memrise.com/terms.
Thank you for trying out Memrise Pro.
Your refund has been issued and should appear in your account shortly (within 5-10 days).
Thanks again and happy learning with the free plan. 
Best wishes,
Memrise Team
Any doubts or questions?
Help page 
https://memrise.helpshift.com
Top FAQs:
• How to request a refund
• How to restore your Streak
• How to report a bug
Or 
️Contact us