Straight from the site:
What can I request a refund for? Valve will, upon request via help.steampowered.com, issue a refund for any title that is requested within 14 days of purchase and has been played for less than 2 hours (this includes online, offline and shared library playtime). Even if you fall outside of the refund rules we've described, you can submit a request and we'll take a look at it.
Looks pretty clear to me, you had plenty time to refund it.
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