My phone shows calendars from O365 which have been deleted from the 'Other calendars' section on the O365 Calendar.
I accidently created a couple of calendars in O365 when trying to work out how the function worked (I should have used 'open' not 'new')
these newly created calendars are permanently stuck on my Nokia 930 (win 8.1, Lumia Denim), which is annoying.
I can delete them from the PC web browser looking at O365 Outlook.
I can untick them in the settings screen of the calendar app, but they never disappear from that settings list.
I tried deleting my 0365 account from my phone and reinstating it including a power down in between.
Any ideas how to get of rid of these? they're cluttering up the settings screen!