since the IOS update my calendar will not sync with my computer and has decided to open a new calendar to sync everytime i open it. Each time I open the calendar on my phone it duplicates the email that I sync with on its own and shows an event for each calendar. It doesn't matter how many times I redo the options for syncing it automatically keeps adding a duplicate to the email I use. I have deleted it and redownloaded it, and it still happens. My computer shows that it won't sync and this is getting old. I am ready to delete it for good. I need a trustworthy calendar to sync with my work email. How do I fix this?