I have the same problem and have not had any success with chess .com Have you succeeded?
Message deletion

I'm having the same problem, It says "X messages deleted" but then nothing happens to the inbox. Has been happening for about 3 days.

I got this Response from Chess.com "We recently had to make some changes to the messaging system in preparation for the new site version release. Messages for the time being will not display as deleted but they will auto-delete once the messaging system is integrated completely"
This is now the 6th thread on this topic.
A lot more than 6:
http://www.chess.com/forum/view/help-support/unable-to-delete-messages
http://www.chess.com/forum/view/help-support/messages-no-delete
http://www.chess.com/forum/view/help-support/why-my-messages-are-not-being-deleted-anymore
http://www.chess.com/forum/view/help-support/unable-to-delete-msg
http://www.chess.com/forum/view/help-support/messages11
http://www.chess.com/forum/view/help-support/is-a-problem-on-the-site
http://www.chess.com/forum/view/help-support/bug-in-deleting-messages
http://www.chess.com/forum/view/help-support/inbox
http://www.chess.com/forum/view/help-support/cannot-delete-messages
http://www.chess.com/forum/view/help-support/super-message
http://www.chess.com/forum/view/help-support/unable-to-delete-my-messages
http://www.chess.com/forum/view/help-support/undeletable-message
http://www.chess.com/forum/view/help-support/message-handling
http://www.chess.com/forum/view/off-topic/delete-of-messages
http://www.chess.com/forum/view/suggestions/removing-messages-doesnt-work
http://www.chess.com/forum/view/suggestions/erase-messengers
http://www.chess.com/forum/view/community/i-am-unable-to-delete-messages
http://www.chess.com/forum/view/community/i-cant-delete-messages
http://www.chess.com/forum/view/general/anyone-besides-me-having-a-problem-deleting-priviate-messages
Hello,
I am trying to delete the messages in my inbox and every time I click delete nothing happens.
Please could you delete them
Thanks