An Apple repair service would be one to inspect the issue and make suggestions.
There's several ways to contact those persons. Use [Get Support] or [retail Genius]
among other official links. [AASP may help if no other exists. Use Find Locations.]
Some repairs are available through parcel service to repair depot, ask if applicable.
• Mac Repair - Official Apple Support
https://support.apple.com/mac/repair/service
The Genius Bar has service options on their page, not just in retail location.
Contact Apple or regional authorized Apple service provider for direct help.
[Find Locations - Apple] is portal for various services, including AASP repair.
Good luck & happy trails! ☺︎