Until recently, been in a "temp" job at a Samsung repair centre.
No repairing involved.
If wifi wasnt connecting, we dont press the 'turn radio on' button, we replace the module.
If sound was too quiet, we dont turn the volume up, we replace the module.
If funky things happen with OS, we dont diagnose, we replace the HDD, reimage. Backup is customers responsibility beforehand.
If slow to boot up, we dont optimize, we replace the HDD, reimage. Backup is customers responsibility beforehand.
If OS is other than Windows, we send the unit back. Not our problem.
Not even allowed to created a new image with updates and new drivers.
What a muppet show. Needless to say, it wasnt the kind of job I was comfortable doing anymore.
So I dont blame the OP for having a bad experience.