How to complain: 2013 style

The complaint letter is dead.

When we found ourselves getting nowhere regarding the high cost of a courier to pick up unwanted goods, we resorted to a social media ambush (or three). 
Having posted a few pithy comments on said firm’s Facebook page and via Twitter for all to see, we were contacted AT ONCE and the problem was resolved.
The world really is flat.  Maybe social media changes everything after all.