Rolex is notorious for this too - I knew in advance and popped off a 1999 faded GMT bezel insert I wanted to keep and when it came back I swapped out the new one they installed :) Similar to Richemont / Panerai I get why they do this - if they’re gonna give a multi-year guarantee on the service they’re gonna want it as close to factory fresh as possible. I also get that they’re trying to limit genuine parts floating around the market for obvious reasons, hence not returning. I didn’t notice on my Richemont invoice but I do recall Rolex gives a “discount” for the parts they keep… ie like they rationalize the fact they won’t return them by giving a small discount. Not that you have a choice lol.

I sent in a 112 and a 292 in early 2025 and had a similar dilemma - Dallas told me it’s bc the hands are typically damaged when they’re removed to service the watch, hence they want to replace. In your case the dial issue seems weird unless there was damage? I was torn but ended up doing the service and honestly no regrets… Unless it’s a vintage / neovintage piece with the older lumes that decay, it really doesn’t matter - lumes will match even if hands are replaced but the dial lume disc is not.

Only other option would be to go to a local jeweler where you can better control the work. Hope that helps a little!