Delete multi day event!!!!!

Still iOS not possible.
I started event forgot it and it runned for 10days.
Now I need to delete it

But the delete is only for ONE DAY. Even when it asks to delete working EVENT!

Why is one working event splitter into multiple when it overlaps 24h !!!! It is still ONE working event.

That would help to get rid of forgotten to stop events.

Just use the "group by" feature in the app settings (e.g. group by week) and then delete the whole week