OK - it's probably not original. One of those "must've been done before" but here it is.
FENCING
CALLER : Hello. Is that CD Fencing?
MAN : Yes sir. How can I help?
CALLER : I found your number in the phone book.
MAN : So what have you got for me then?
CALLER : I'm sorry? What have I got for you?
MAN : That's right. What have you got for me?
CALLER : But you're supposed to offer the service.
MAN : And I am. So what is it then - DVD player, Digital Camera? Laptops?
CALLER (PUZZLED) : I want a fence.
MAN : Well I'm your man.
CALLER : No - a fence. A wooden fence - trellis - something like that.
MAN : Well why did you ring me then?
CALLER : Your name - CD Fencing.
MAN : Oh I see! There's been a bit of a misunderstanding. Stolen goods - that's what we deal in!
CALLER : But that's illegal.
MAN : Shhh! Someone will hear.
CALLER : But you advertised in the phone book.
MAN : Well how else am I supposed to get any business?
CALLER : I thought it was usually word of mouth - in the pub.
MAN : Wow - that's a good idea. I'll try that. Actually you know - you're not the first person to get it wrong.
CALLER : You surprise me.
MAN : I've got another number. Maybe they'll be able to help you.
CALLER : Thanks for your help.
CLICKS THE PHONE DOWN. PAUSE THEN HE RINGS ANOTHER NUMBER.
WOMAN : Hello - FSR Fencing. How can I help?
CALLER : I understand you supply fencing equipment.
WOMAN : Yes sir. What would you like? Foil? Rapier? Sabre?
CLOSE