it still happens on other ROs too, not only with BR but lot of trash from all over the world do it to :\
not long ago, someone asked me in if I could give him zeny and I told him to go sell stuff if he wanted money :\
after telling him that he started insulting me in spanish a lot and not nice things I can type here but I replayed with one simple line āYo tambien se espaƱolā(I know spanish too) and the guy left town xD