Try to give them a call and ask in person.
You and a friend can give each other a call.
But when he does get here could you have him give me a call?
Give me a call because I got a plan for you.
One of us will give you a call every hour all night.
Give them a call and you might get someone who can help.
Give me a call early next week and we'll set up a time.
Give us a call and we'll see what we can do.
Give me a call when you get back to where he is.
If you think of anything else, give me a call.