Could You Be More Specific?

I answered the phone today at the office. The man on the other line asked to speak to Oscar, who was on another line. I asked if he wanted to leave a message.

"Yes, my name is Foreigner McAlien and my telephone number is 202 555 3897."

"OK, and can I tell Oscar what this is regarding?"

"Yes, it's about my immigration matters"

Ummm... yeeeeah. You and every one else who calls here!