Depending on the level of your discontentment:
xxxxxxxxxxxxxxx@ bt.com is, as far as I know, the first port of call, or at least as good a place to start as any.
I'm not sure if he's still with them or in the same job, but Warren Buckley at xxxxxxxxxx@bt.com has been extremely helpful to me in the past. If he's not in the same job, I can't guarantee that his successor will necessarily be as helpful. I can't remember what his official job title was offhand; something like 'head of customer services', I think. Aside from the C.E.O. himself ( see below ), I can tell you from first-hand experience that if anyone can get things done, Warren Buckley can.
Finally, xxxxxxxxxxxxxx@bt.com is the e-mail address of the C.E.O., according to Google. As mentioned in some of my other posts, the likelihood of your e-mail actually getting read by Philip Jansen is pretty much zero; however, it will usually be passed to the Executive Office to be dealt with. Whilst you'll probably still end up dealing with someone five or six levels down the food-chain from the C.E.O. himself, it will still be someone significantly higher in the food-chain than the operators you'll speak to in the complaints department - no disrespect intended.
