I think in this case you got a very ignorant person on the other end of the phone. The most likely thing is that they hadn't even looked at your email or, as you suggested, weren't switched on to the whole internet / blog thing. Most companies in Spain probably aren't interested in the press unless you can get a version of the publication in question from the local kiosko.
But the point is of course that customer service in Spain does suck, anyone what has lived here for a while knows that. To be honest I just laugh at it now and see it as another curious thing about this wonderful county. So the waiters are grumpy and people on the other end of the phone are rude and/or useless? Maybe, but I don't think that's going to change in a hurry, and there are enough other wonderful things about the country to keep me happy.
I do agree though that it is unbelievably frustrating to have to deal with at times, and I often shake my head in disbelief at stories like this, wondering just why companies don't want to do more to help themselves.