Eff off and die! Customer service the Polish way

The book by Kwiryna Handke I mentioned in my previous post quotes some Polish clerks and shopkeepers to exemplify rudeness in women's speech that according to her seems to have become commonplace in the late twentieth century as a result of communism. Poles appear to be so used to rude nurses, physicians, post office clerks, railway ticket vendors and college administration staff, male and female alike, that they hardly notice such behaviour. The old office hag stereotype has given rise to many a joke as well as comic strips about Mrs Halinka, who embodies the dean's office lady, a figure unknown to people outside Poland. The comics are here (in Polish): http://www.pani-halinka.pl/ .
Why am I writing about this? Well, although the French are said to be rude to foreigners who can't speak their langue, I'm afraid it's far, far worse here in Poland. I know quite a few Britons and Americans living in Poland who haven't learnt our language enough to run errands and they've all experienced yelling, cursing or pretending not to see them, on the part of women in particular. Whether it's a greengrocer's, a railway station or a clinic, you can always find someone who serves you without a modicum of respect or shouts "Polish!" and refuses to talk to you any longer if you're a foreigner. I've not only heard dozens of such stories or seen such things myself, but today I heard a checkout assistant at a supermarket yell at her customers to go to another checkout just because she saw her workmate having fewer shoppers to serve. Then she served me with a face contorted with wrath, for whatever reason.
Whenever I go abroad the customer service is impeccable. With one exception, however: in Latvia, another post-communist country, they yelled at me all the time just because I could understand neither Latvian nor Russian. It must have been the political and economic system that made the nation impolite too.
I wonder how many generations it will take Poles to start treating others they way they would like to be treated themselves. Or should I look for another place to live?