There comes a time when you must move on.

Diversify your selling efforts. Don't hinge your future on vague promises that someday you will be getting job orders from the big accounts.

Lay it on the line. "Mr. Prospect, you've told me several times that you like our program. Just what do I have to do to have you pick up the phone and give us a job order?" Some people never intend to give you an order. It's up to you to determine when it's time to move on and not waste your time