I wouldn’t go as far as telling the other parents to fuck off. But telling them they should check with you first os definetly appropriate.

Where do you get DRM free ebooks for sale?

It is true that here in Germany Eastern and Western accents differ, however, also in between the Western or in between the Eastern accents you have quite some difference.

On the other hand I would also say that most Eastern accents share a common undertone, more so than the Western ones.