Kia reverse cam not working - service scam bangalore

My wife gave our Kia for body service after a minor bump at the back @ jsp Kia body service centre. When taking in the car, they quoted the damage cost, gave our insurance details, it was going to be fully covered. All good. They said turn around time of 7 days. All good. After two days she got a call and a video saying the reverse cam is not working. When the reverse gear was engaged, the media unit was not showing up the reverse cam. She was surprised because she remembered it worked fine even post the bump. When asked what is the reason, he said, he does not know. Then later said, he’s given the media unit to a guy outside who is checking it, and quoted 9k to fix. I was sensing scam vibes from the start from this guy. I said not required either you fix it in-house or let it be, I’ll take it to another place. When I went to pick up the car, the reverse cam was not working. He said he put another media unit and checked and it was working. He said I’ll have to change the media unit and he doesn’t know the exact reason, and continued to say he has seen this happen w customers. He also said that temporarily it worked today morning and then again stopped working. He said come again next week and they’ll try and fix it. I could sense something was off. I said let it be. Took the car, drove out a few hundred meters. Searched the issue online, found from a forum that there is an engineering mode for Kia media sets, where you can disable the reverse cam. All you had to do was enter the engineering mode (google how to do it, it’s similar to enabling developer mode on android. 5+1 clicks on the settings page). Reset the media unit to factory settings. Enter few passwords ( available in videos online). And Tada. Everything working. I drove back, called the guy outside, showed him the fix. The look on his face said he clearly knew it. He said ‘ok great now it’s working right, good’. Will definitely be reporting this to Kia. TLDR: - Kia car bumped at the back - gave for service - they said reverse cam also not working - but cam was working while giving - tried to ask for extra money to fix it outside saying they can’t/don’t know how to fix - said it keeps happening to some units and they need to replace. - I searched online. Found the hidden setting to disable cam. Did a factory reset to revert. - issue resolved. Showed it to them. They acted as if they never knew about such a setting. - sensed lies - reporting to Kia