I once had a mom call with a kid having an asthma attack. The child was unable to speak. He was around 5, IIRC. According to our protocol, this was a "911" disposition. I told the mom that was what she was to do, yes, really.
Twenty minutes later, grandma calls back.
They are still at home, and she called to argue with me about the 911 call; she just didn't think that he needed to go to ER by ambulance!
I told her what I'd told mom, that I could not advise them to take him by car if my protocol said to call the ambulance.
What I wanted to do was to reach through the phone line and slap her upside the head and maybe slap some sense into her. If they had left with the kid by car when I talked to mom originally, they would have been in ER before Grandma called me back!
Fortunately they finally did get the kid in and he didn't stop breathing on them on the way!