Worst drive-through service ever! I came through the drive-through at about 4 PM today. I ordered a vanilla Heath concrete custard. There was one car ahead of me. After a couple of minutes they got their ice cream and I pulled up to the window. The girl immediately took my credit card and ran it. She handed it back to me, with no receipt. She said I'll be right back. After about 10 minutes of sitting in the hundred degree heat with my window open, and about 10 teenyboppers running around inside of the sonic socializing and not working, she brings me my ice cream (if you can call it that at this point. It was about 3/4 full and The top half was melted and was basically a soup. To top it off I never even got a receipt. I love sonic with their drinks slushes and ice cream's, but I'll never be back to this one. Very disappointed.