Some quitters must really respond to persistent hounding - because that's partly what you're signing up for when you sign up for Quitline.
Don't get me wrong - Quitline is great. They offer prescriptions for cheap nicotine patches, gum and lozenges. Their website and booklets offer heaps of great advice on how to quit. You can contribute your own quitting blog entries on their website, and interact there with other quitters. And, of course, there's the eponymous phone service, where you can call up for help, advice, support - or just a friendly voice on the other end of the line.
The cost? Free.