Rolex said they have to swap out my bezel

[jpeaseiv]

I sent in a late 1970's submariner to be serviced. They said it needed a new crown, acrylic, dial, and bezel. I told them I didn't want to replace any parts, but they said they can't do the pressure test unless they replaced the crown, acrylic, and bezel. The crown doesn't work correctly and the acrylic is scratched. I think I am ok with them replacing those. The dial doesn't glow, but I am not going to replace it. So really, my concern is with the bezel. Why would they need to replace the bezel for a pressure test? What would you do?