2025 Buick Enclave - Ongoing OnStar / Battery Drain Issue

Pull the F8 fuse for onstar and it won't drain youd battery i just spent three hours at the dealer waiting for them to test and program something already new was bad then service adviser told me it was fixed when I got in the car it didn't work went into the show room floor went off sell manager and he got the service manger and got technician and they disconnected it show it wouldn't drain the battery. And we wait for the part it's amazing how factories aren't shut down waiting for the part.