Sonic Drive-In

I was asking about the new slinger sandwich and the gentleman told me "it basically a cheeseburger with mushrooms". I was very disappointed to discover how tiny it was AND there were NO mushrooms. Major disappointment! It definitely was not worth the cost. I also requested my drink with no ice. It was filled to the brim with ice and very little drink. I've never had this type of experience at any other Sonic places.