When you're making a phone call in New York
City, this phrase usually means that the person on the other line isn't putting you on hold to help you, but to either talk to another customer
or to make a personal call.
Hold on...(you're waiting ten minutes on the phone)...
(10 minutes later)...Sorry to keep you waiting. Your Edvard Grieg
orchestral works box set
hasn't come in yet.