I just let the phone ring and ring till the network picks up and tells him I'm not answering. That way he wastes extra time and gets stuck with the phone call bill. These 201-340-xxxx numbers are so easy to spot.
One more number added to my auto-reject list.
Try this, When they keep calling, go to the dollar store and pick up a couple of the little horn blowers in a can. Like the ones they use at sporting event. When they call, politely answer the phone to make sure it is a telemarketer and then let them have it. Hilarious!!!! hopefully you break an ear drum.