Is it hard for people to understand when you say you're from Republica Srpska? Not bosnian/croatian/serbian?

People will usually think you're from Serbia, isn't that upsetting ? I myself am from Banja Luka, capital of Republica Srpska. But I am NOT from serbia and have never been to serbia. And apparently people from there dont like that its called Bosnia nor they ''speak'' the language called bosnian but they speak (either) serbian or serbo-croatian ...?