In email (gmail) when I delete a message in my Inbox the next time I open mail all of the items I deleted come back into my Inbox. How do I delete them permanently?

In email (gmail) when I delete a message in one of my email accounts inbox and then close email, the next time I open email for that account all of the deleted messages reappear in my inbox. My email settings are to move all deleted messages to Trash upon closing email but but that doesn't work in one of my email accounts. It works fine in another gmail account I have. How do I get rid of the emails I wish to delet permanantly?