Bad owner

Hi there went to the one by Park Meadows this morning at 08h30 been going there for years saw they were ready for clients yet seemed that they opened late. I ordered a Caffe Late and a large coffee, when the waitress brought the drinks my coffee was in a normal small cup. I said to her i wanted a large or big cup the owner that was standing behind the counter started shouting at me said that is how he serve his coffee and if i dont like it i must go somewhere else i cant tell him how to run his restaurant.