I completely understand - it's upsetting when you're following along with a show, especially one that isn't available on any other network, and suddenly it's no longer on! What's My Line? is a true classic, and the series was cut off right in the middle of its heyday.
While I truly sympathize with you, I don't work for GSN. This blog and website are part of the About.com network, and while I'm in touch with the folks over at GSN on a regular basis, I have absolutely no influence over what they're doing there. I can, however, point you in the right direction to voice your opinions!
The GSN website is at gsn.com, and they have a contact page that lists their phone number and e-mail address. I urge you to contact them and let them know how you feel - networks do appreciate feedback from viewers.
Of course, if you just want to vent, feel free to use the comments section here, or head over to our forums and join the discussions there. I always welcome your input!
Logo courtesy GSN