I've gotten 2 calls from them already this morning! I filed a complaint with BBB about them harassing me. Not only is my vehicle under 6 months old, I work for the dealership I bought it from and I can without a doubt guarantee that NO dealership will EVER solicit you to extend your warranty. Not only that, these people are an "aftermarket" warranty company. Most dealerships don't take those warranties.
Then fight fire with fire. Keep them on the line as long as you possibly can. Play dumb, ask them to repeat things, ask personal questions. Waste THEIR time.