Calendars Question (Priv and Classic)

My default account is an Exchange ActiveSync account. Email, Contacts, and Calendars pull from there. I don't have other accounts set to sync my stuff to my Classic and Priv. For some reason the calendars app on both devices (blackberry calendar apps) are showing calendars that don't exist on the Exchange server. They dont' show on my tablet, in my Outlook, OWA, and I contacted the provider for my Exchange, and they can't find them either.

I phoned blackberry support and they sent me to Tier 2. They advised it was a server issue, so I'm now getting a run around. Somewhere, these calendars existed, but are gone and still showing on my phones. We even downloaded the google calendar app itself on to the Priv and sync'ed... they showed up there as well.

Has anyone experienced this before? Any suggestions?

On your BlackBerry Classic. Go to the BlackBerry Calendar. Slide down from the top and tap Manage (middle icon).
Uncheck any calendar that you don't want to see. Also you will see the proper names of those mysterious calendars and maybe give you a clue as to what's going on.