Support Email not Updating....since December 20th

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http://androidforums.com – I have seen a couple threads but nothing that answered what I am experiencing. Without any changes to settings....over a week ago my email stopped updating. It does not manually update....and it does not automatically update. I have been through all the settings in the Mail function itself....and also checked all the boxes in the "Data Usage" section of the phone to no avail. Did someone figure this out in a thread and I just can't find that thread? Thanks in advance for any help (General)