That's unbelievable! I'm so sorry for your loss. There has to be something you can do. Call the papers, call the news. It's outrageous! What's the point of getting a microchip or tags if nobody looks at it? You have those things on your pet because you want to find them should they run away.
Did they at LEAST apologize or give a reason as to why they didn't even check or had her put down after ONLY a week?