Rude employees

From now on customers without masks don't go inside the shop they buy from the window outside. I went to Engen Bonaero Park to buy from the shop not knowing that I have to buy from the window outside, when I got inside shop there were 2 ladies 1 at the till and the other was on the floor. They both shouted at me at once saying that since I don't have a mask I need to buy outside. I don't have a problem with buying outside but I don't appreciate being shouted at.