First of all you are in the wrong thread. Here the link. No phone nos. though.
Contacting Support

To change your thread to a different caterory. Go to the bottom of your homepage and click on "Manage All Content" and change your thread to be put in "Help and Support'
Is there a phone number to contact Chess.com. I am needing password support-and Diamond level membership support.
This whole experience with so-called support is making me reconsider whether to renew.