WordPress.com provides a 30-day refund on all upgrades except Domain Registrations, Domain Renewals, and Guided Transfers. The refund period for Domain Registrations and Renewals is 48 hours. It takes from 1 - 2 weeks or 7 - 10 business days for the refund to be received.
re: Canceling upgrades
Every WordPress.COM blog has a sole owner. It is the person with the WordPress.COM username account who registered the blog under that username account and a single associated email address, and who is the original Admin of the blogs registered under that username account.
You have to be logged in as Admin http://en.support.wordpress.com/user-roles/#administrator under the exact same username account that registered the blog to access the blog's dashboard, cancel any upgrades, claim a refund for any qualified upgrades, and disable auto-renew. Dashboard > Store > My Upgrades. You can also disable auto-renew there. http://en.support.wordpress.com/my-upgrades/#canceling-upgrades
1. What is the domain URL?
2. What is the underlying .wordpress.com URL?
3. Exactly which username account registered the underlying .wordpress.com blog and purchased the upgrade for it?
4. When was the upgrade purchased?
5. When did the refund request and upgrade cancellation, or the domain expiration take place?
I will type modlook into the sidebar tags on this thread for a Staff follow-up. How do I get a Moderator/Staff reply for my question? https://en.support.wordpress.com/getting-help-in-the-forums/#how-do-i-get-a-moderatorstaff-reply-for-my-question Also subscribe to this thread so you are notified when they respond and be patient while waiting. To subscribe look in the sidebar of this thread, find the subscribe to topics link and click it.