This reminds me of the time my landscaper husband called me at home to pick him up from work because he wasn't feeling well. When I got there, he had heat exhaustion so bad he couldn't walk and two co workers had to carry him to the car! I yelled at them for not calling an ambulance and they told me my husband told them not to! At that point he was in no condition to argue and I drove literally 6 blocks to the nearest ER and had to have a stretcher brought out to him.
I don't know who I was angrier with. Him for not wanting an ambulance or his co workers for listening to him.
There are two extremes with people using 911. The "I've had an earache for a week." people or "It's only indigestion, I'll be OK" people.