title: How to close call kit when call doesn't connect but call kit ui is running in the background
body: <p>It happens many times that when call is started it doesn't connect and I can't figure out where it is getting stuck. When it happens the callkit ui is already started as I can see that green notification bar. How do I close callkit ui in this case when call hasn't been connected but callKit ui is running in the background?</p>