Interesting...I had just the opposite experience with AIB customer service. I had a bulb die after 6 mos and they replaced it no questions asked and shipped it to me overnight. That was over a year ago now but I couldn't have been happier with their help.Just a heads up. If you buy used request pictures of them on in the vehicle to make sure they produce the same color light. Mine arent exactly the same.
Also AIB customer service sucks, I tried numerous times to get ahold of them, by email and by phone. None of my calls or emails were ever returned. I pretty much gave up.