I once worked in a high volume ED and often when we tried to call report we got the nurse is not available then the charge is not available. They state they will call back in 15 minutes which 9 out of 10 did not happen and when you called back after 30 minutes you got push back. How we stopped that issue was we called the floor, asked for the nurse taking the patient. If not available the change nurse. If not available informed them the patient is on the way. Problem of delaying taking report stopped real quick.