Brutal, Nick! :) Nice, but brutal...
I dont get marketing calls - dont have a phone.
I dont get junk mail - dont give out my address.
Get spam emails - but thats life.
I tend to go postal at actual services that p!ss me off.
I moved out of a flat once and the estate agency wanted to charge us about 1k on top of our deposits for "damages" (we had made a mess, but not 2k's worth!).
They were chargin 15 quid to replace a light buld and stuff like that ("they had to hire an electrician to do it").
But, i had recently completed a law module at uni and was feeling particularly arguementative.
8 months later and a 4 inch high pile of letters and the owner (senior partner) eventually sent us all cheques for our full deposit and a letter asking me to stop sending him letters. ;)
Companies will only take so much crap off of you before they start running at a loss and decide to pay up.
Needless to say I didnt have internet access then (lots of time on my hands!).