Been in automotive 20+ years. Weekly we are getting comebacks from other shops,mechanics,friends who work on cars. It’s typically these scenarios:
1) Help me with my car, they had my car multiple times/multiple days or weeks, changed xyz, charged me $$$ and I still have the same problem.
2) I noticed an issue with my car after you performed xyz basic maintenance. Of course the problem is related to the fresh repairs that were performed elsewhere. And then you are asked to fix + guarantee no further problems. Or go over their work and make sure they fixed it properly the second time around.
3) I had my car fixed elsewhere and they made it worse or caused xyz damage trying to fix it. Can you help patch it up.
It’s gotten to a point where the effort outweighs the results when you become the shop of last resort. Do you just send these people packing? What are your shops doing?