This is usually the best way to get a response from staff:
You can follow the Help & Support link at the bottom of the page to get there.
Edit: Oops, I meant this link:
http://support.chess.com/Tickets/Submit
Free 10 day trial not in account
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I accepted the 10 day free trial last evening after providing my credit card data. My account immediately show the trial clock counting down. After leaving the site for about 12 hours, I returned to find no evidence of having signed up for the trial. This situation needs to be resolved, but I don't know who to contact, which web address, etc.
Please advice. Thanx