Are cable boxes really so mysterious and complicated as to be serviced only by 'specially' trained employees and 'vetted' contractors? I'm no expert in the are

Are cable boxes really so mysterious and complicated as to be serviced only by 'specially' trained employees and 'vetted' contractors? I'm no expert in the area, but if a Modem or Cable box needs to be reconfigured on the service provider's end, you won't get that fixed with a charity service. Though a charity service could reduce the volume of calls for the serious problems that require service provider intervention.