Vodka Sprite tasted like melted ice. Paid with car...

Vodka Sprite tasted like melted ice. Paid with card and got a notification that is was declined so I paid cash and left. Saw the next morning that I was also charged on the card with tip added. Friends said that a different waitress who closed the rest of the table out accused them of lying when they told her I had already paid in cash but refused to ask our original waitress about it.