BAD SERVICE FROM THE COMPANY TO CLIENTS

Yesterday it was raining,so I went to Mdantsane Hiway Spar to buy meat,I was wearing my tracksuit top with a hood since it was cold and raining,when I entered the shop,the security stopped me and instructed me to take of my hood,she showed me a written notice at the door that customers must not wear Hoods,caps or Beannies inside the shop,I was so furious to a point that I left the shop and decided to go buy elsewhere,is this acceptable??