JC Penney review: they lost my glasses

I took my 3 month old glasses in because the lenses were scratched really bad, the sales person said she would send them to the lab, after 2 weeks I called and was told they knew nothing about them. It's been 3 weeks and they still have not found them. they told me on July18thj, they were still looking for them!.. How long do I have to wait before they do something about this, I am now wearing glasses that are 3 years old.