"Just because you or your supplier says it is genuine, or because your supplier can provide a piece of paper stating that they are authorized to sell a legitimate product from time-to-time doesn’t change the fact that what you sent me is a counterfeit product. You can provide paperwork – but all of the current Chinese counterfeiters are also providing paperwork that appears to be genuine. The serial number will also likely be a “genuine serial number” but it was probably taken from a legit product and then used to deepen the deception.
What I find disturbing – here you are, willing to give me a measly $100 back (which is roughly the cost of shipping the product back to you by the way), but you won’t take the product back because you likely know that you sold a fake product and you don’t want to take of the responsibility for doing so. What I see happening is this... You will play the “oh it is genuine, look at this piece of paper” game. I’ll end up having to actually send the guitar to Fender for “warranty” work.
A month or two from now, Fender will tell me that they are very sorry this happened, but the guitar isn’t genuine and that they are unable send it back to me because of the risk of having a fake in circulation (which they are allowed to legally do). At this point, I’ll get my money back from the credit card company and you get nothing. The smarter play for you is to take responsibility right now, honor a return, and then take up the issue with your supplier. Be smart about this"