I would like to share my recent experience with a famous brand's watch service center.
I own a vintage Piaget automatic with a 18J movement, recently I took it to Mas Schweizer Swiss Watch Service in Australia to get it service and repair a stuck in the "second hand", this happened after I took a short trip to Hong Kong (seems it is the air trip caused the problem). It turns out, the repair center said they do not have the correct parts so they need to out source the repair, I asked whether they can send it back to Swiss main factory, they said they will consider it. At last, it turns out they send it to a NZ watchsmith, they changed my crown with a smilar parts (90% similar), I requested a refund or re-repair the dealer declined.
While 5 years ago, my vintage IWC also have similar problem, the local dealer, Watch of Swissland could not reapir it and sent it back to Swiss factory to do the repair with the correct parts. IWC Swiss end up charging me a crazy bill as they did some extra jobs that I did not request (as well as Australian custom charge me 10% duty for my own watch when shipping it back) but I am happy for the end result.
My vintage Piaget may not worth a million dollar, but it still worth a lot in many people's standard. If after I pay such a price I cannot enjoy a life time customer service, I will never buy that brand again.
It is not the problem of money, we love our watch because its workmanship, I never consider it as an investment. It is an artwork, what Piaget's dealer did is damaged their own piece of artwork.
My opinion is before you choice to buy a gen watch in a country, you better check the service center or dealer's reputation.
That is also the reason why I now switching to good rep watches like those from wm9 or BK, at least they care about their products and reputation, a nice rep watch is still a piece of fine art, worth our respect.
Sorry that I am quite upset on my "damaged" watch, so the post may be subjective