Set domain to expire

To Whom It May Concern,

The renewal date for my registered domain name "swashbuckel.com" is nearing, and I do not wish to renew it. I have no need for it or an account in general. When trying to prevent the renewal of the domain name, your website said I had to go to the billing details page and click the 'X' icon next to the item I wanted to cancel. But I did not see an X anywhere on that page. Please let me know how I can avoid having my domain name renewed.

Thank you,

Mario Passera