I am dealing with this issues for quiet couple of hours and tried all possible ways to delete my EC2 instance that I created for testing/free trail.
Immediately after stopping/terminating the EC2 instance its restarting a new instance with new id.
Also I tried detachingand delete volume after stopping EC2 instance ,which is again restarting with new id pointing to the new EC2 instance that started. I have default security group assigned to the instance which I can't remove it from it.
is there any other thing that I need to look into