Bad service

I saw of a special got interested as i was on a mission to get dinner they advertised a quarter chicken chips and coldrink on the image its a leg potion ...at Alberton Redruth center when i placed my order i requested a leg part it was in the afternoon the lady on the till got irritated and rudly to i have right to choose because i am buying a special when i asked to give that is not on special she could not help i was so disappointedi had to leave the stored heart brocken and emty handed regrettinga stop i did to that shop