Here's how to give them a dose of their own medicine.
Call back that number from an unlisted landline, follow the prompt. At the end you will be asked to leave name, number and preferred schedule to meet them. Give false name and number, and it is important to pick the earliest date. Then they would have their reps/telemarketers listen to messages that are requesting early meetings - thus efficiently wasting their time and money as well - payback!! I left them 4 messages 4 different names from the series Heroes :), earliest times. Leave as many as you can, you dont have to wait for their sales pitch the second time around, just press 1, 1, and 3-digit code.
A recorded caller stating that because I or family member had filled out a form I won a free cruise out of Galveston Texas for a 7 day cruse with Royal Caribbean. To claim his prize just press 1. I hung up.
Called my unlisted cell phone number in the 214 area code (Dallas). I let it go to voicemail since I didn't recognize the number. It was a pre-recorded message saying that I won a western Caribbean cruise, and said to press 1 to claim the prize. Area code 301 is western Maryland. The # was 301-882-9971, said to press 1 for directions, pressed one and the recording continued to play over and over again. I looked up the number and this is what I found. Said the company name is Vacation Business Soultions
They left a message saying we filed out forms, which we didn't, and that we were the winners of a complimentary Carribean Cruise. I deleted the message.