Too easy to gripe when we have bad experiences, time to relate some good news.
I ordered some xenonmatch fog lamp bulbs from Hoen, and I screwed up and ordered the wrong type. I wrote to them, and Andreas over there told me to ship the bulbs back (free via UPS) and even double checked the order with me before reshipping. I'd recommend them on customer service alone, they've been great.
http://www.hoen-usa.com/
JV