https://support.runescape.com/hc/en-gb/articles/207480615-Pre-Paid-cards-and-Membership-passcodes
Check out the Contact Us button. They'll be able to help you.
https://support.runescape.com/hc/en-gb/articles/207480615-Pre-Paid-cards-and-Membership-passcodes
Check out the Contact Us button. They'll be able to help you.