1.   The Internet offers a place for crank callers to market their best bits.

2.   When the phone rang, Abrams picked it up and tried to get rid of what he thought was a crank caller.

3.   Crank callers often phone the brain bank to offer a deposit or ask about the current interest rate.

4.   The judges ask callers their age, religious backgrounds and where they live to make sure they are not crank callers.