Bests & Worsts Reviews from Amazon

I have purchased and installed dozens of these and similar Linksys routers from other vendors. All were perfect out of the box until this one that I got from Amazon. This last one was for a client who needed it ASAP. Unfortunately, I have egg on my face and an unhappy client who thinks I charged him for a used device. I'm out hours of time plus expense of buying a replacement elsewhere, , because not only is it defective (wired connections don't work at all), but it already had a wireless network named "Murphys" installed on it. Obviously, someone had sent it back and Amazon just re-boxed it and resold it to ME. There are not enough words, either polite or impolite, to express my annoyance, frustration and utter astonishment that Amazon would do such a thing. After years of being a happy, satisfied customer, I am beginning to wonder. After I send it back, will they just gleefully saddle yet another unsuspecting customer with this thing?