Shake Shack Lexington

I love shake shack, I go every single Friday. It's my treat to myself. Today when I went, I ordered a strawberry lemonade and was rung up a strawberry milkshake. When my order came out I asked what he was hadning me and he picked up the bad, looked at the receipt, shows me the receipt and rudly says "starberry milkshake". I told him I had ordered a lemonade so he throws back down the milkshake, fills up a small lemonade, not even all the way full , and tosses it down in front of me. Then he took back the milkshake and walked away so I did not even get to keep the expensive drink I paid for. No one apologzed or offered to refund the difference or if I wanted fries or anything. It's not like I need the $4, but it would have been nice to have been offered something. I basically paid $4 for rude service. I am very dispointed.