AMC Theatres won't sell small cokes!

AMC Theater in Edina, MN would not sell me a small coke unless I bought a small popcorn. I had already requested a medium popcorn and they said I could only get a small coke if I ordered a small popcorn. So I purchased the medium coke and it was the worst I've ever had. I couldn't even tell if it was diet or regular. I will never buy a medium popcorn or coke there again. Just sayin...