Recently there were problems when students needed bank declaration in the Slovak language for foreign police. Some branches of Tatra Banka issue it in the English language.
How to prevent the problem next time?
The language of bank declaration is terminated by Contact language (in Slovak: kontaktný jazyk). It is language that are also bank statements issued and delivered to your email ID. When you go next time to Tatra Banka, make sure to change your Contact language (it is different settings from language of the application) from English to the Slovak language – or ask the bank clerks to change it before putting a request for new bank declaration.