Shared calendars now sync to mobile phones

Hi Julia,

I am having a huge problem as since the 9/2017 update whenever someone shares there calendar with me I cannot turn it off so that it is not on my Mobile phone. I would like to be able to see events when necessary, but not have 10 or more people's schedule on my personal mobile phone at all times. It becomes cluttered and confusing.  Even when I deselect their calendar on the web outlook calendar it remains on my mobile phone.  When I delete the events from my mobile phone I have been told that it deletes the persons calendar event.  I notice that this only occurs for those who are listed under "People's"Calendar and not "Others" Calendar.  I assume they labels changed after 9/2017.  Is there any fix for this because it is causing me great headaches.