If you changed your RSVP to 'No', it will still show the RSVP in your calendar. This is so that the person who invited you to the event knows that you are not able to attend.
I tried to cancel my RSVP online, but it did not work.
If you changed your RSVP to 'No', it will still show the RSVP in your calendar. This is so that the person who invited you to the event knows that you are not able to attend.