This happened to me over the summer. I bought a pair of Chanel sunglasses a year ago and gave it to my friend as a present. Well, when the screws fell off, Nordstrom gave her the number to Luxottica (????) to call. They are the ones who apparently fixes these things. They told her to send it in and they will fix it. Well, she got a letter back along with her sunglasses that they were fake Chanels and that they were not going to fix it! Can you imagine how shocked and embarrassed I was? After all this time, I had thought that I bought them from a reputable seller. So back to the OP's question, I think if you send it to the Luxottica group (or whatever they are called) they can at least provide you with a letter. The only problem is that it will take a couple of weeks to hear back from them. I'm not sure how long you have to file a claim with Paypal.