A few short stories of recent FAIL and WIN experiences in customer service:
Trying to stop getting unsolicited postal mail from Comcast
I'm not a Comcast customer, haven't been for a long time, and never at my current address. I get postcards, letters and brochures from them on a regular basis - sometimes several times a week. It's annoying and wasteful. I searched the Comcast website and the Internet at large for a while for a web-based form to get on a "do not send me mail" list, and couldn't find one. I called their 800 number and hung up after too many minutes on hold. I finally sent in a generic inquiry through their online form, providing the addresses I wanted removed.
Done, right? Nope.