If you can’t see the person knocking through a window, try to get a glimpse of their car. You might recognize it as a friend’s or family member’s vehicle, or it could have the name of a utility company or other business on it.
For example, you can go up to the door and ask: “Who is it?” or “Can I help you?” If you have an intercom system hooked up to your front door, use it to talk to the person knocking so you can hear them more clearly.
You can say to the person outside: “I just called for an ambulance/tow truck. They’ll be here any minute to help you. ”
