Title: TeleZapper TZ900
Review: Mine doesn't work. Followed the directions, let it run for 18 months or so, no luck. Finally changed my phone number. New number was fine for 6 months then the dunning calls for "Kevin" began again. Follow up: Ah Ha! I installed a new battery (CR2032) and now it's sending its three audible tones. So, if you buy this, buy a fresh battery too! Update: Works Great! No more dunning phone calls for people I don't know! However, to tie it all together, I've also stopped answering my phone. I just respond to voice mail. No telemarketing or dunning calls for a month now! Hooray!
Is this product review negative?