Email messages randomly being deleted.

I am using outlook.com on both my Mac and iPhone and am having massages randomly getting deleted without me doing the deleting.  An attempt to retrieve any deleted messages using your "recover deleted messages" tool proves futile.  I get "There was a problem with the Outlook service (a temporary network connectivity issue that has nothing to do with your computer). Please try again.  If you keep seeing this message, go to Service status to check if there's a problem with Outlook." The emails in question were recent and very important (work related) and this is starting to cause me great worry in the reliability of your service.  Can anything be done?