I don't know if bikemp3 is a preferred vendor here, but I bought their 960 fog light kit kit from Cyclemax, as have many.
On doing the install, one of the lower trim plates was missing.
I emailed them on Saturday, got an email back Saturday evening from Pete, who I assume is the owner, who said he'd look after it first thing today.
This morning I get a phone call from their customer service person, wanting to know the particulars (exact missing part, my address, etc).
I didn't take the call, but got the message. She left me her email and requested my info.
About 15 minutes after sending the email, she replied with a confirmation and USPS tracking number for the missing part.
She is sending out both left and right trim plates just in case.
Great customer service!

BTW, the Honda accessory fog light kit that I had previously installed just doesn't cut it.
It's way overpriced, and the dollar per lumen output is yesterday's technology.