HB wrote: But #3 is entirely within the service department's control and represents an opportunity to build your trust in the service organization's ability to recognize and correct their mistakes.
So true. I was offered a replacement part on a new machine, albeit it was deeply discounted as it had sat in the warehouse (or somewhere) for a few years. This is a copy of another brand's machine, with (supposedly) interchangeable parts. When the original part didn't perform well out of the box, they suggested that I could send it back or get the new part and install it myself. Being handy, and not wanting to be without the machine, I said to send me the part. After a lot more'n a week, I called and asked about tracking information, and they said that it was back-ordered. Shoulda told me that when I started the conversation. I waited the two months that it was supposed to take to get the backorder filled (far too long for a warranty repair part, regardless of the discount, IMO) and then waited some more. And more. I finally wrote an email to ask if I had been forgotten. Apparently, my parts were on the same boat, and they couldn't find mine either, so five months without the machine later, I suggest that they have a couple of options: Replace the machine, refund the price of the machine, or go out and beat the bushes for a part. They found another machine that had been returned for repairs and sent me the part scavenged from that. Almost six months to replace a part under warranty. I'm going to insist that the warranty be extended by that period, but I'll note that the part from other vendors for the identical machine (although branded as the original) was available from at least two vendors the entire time, just waiting to be shipped.
All of this would have been far less annoying if they'da copped to it, and I wouldn't have had to contact them each and every time for updates, out of sheer frustration. Mediocre service for a non-customer makes them go away, potentially. Inadequate customer service/parts/ and repair after the sale pretty much guarantees it.