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.