Sometimes you can't make the call but you can always text.
Friends Network - Text-To-911
Have you ever been in a situation where you needed to could call for help but couldn’t? Loud music, bar scene, around people that you feel very uncomfortable with? The list goes on and on… If your 911 dispatch is equipped to receive text messages, you can freely text dispatch the situation and press send. The message would be sent along with your location. Please review the FCC Text-To-911 compliance chart and see if your local facility has the ability.
If they are not equipped you will receive a bounce back message telling you that Text-To-911 is not an option in your area.