I feel you. I recently had one company(who installed my unit) tell me that I had to replace the entire copper line because I had a leak. I did some research and found out that is extremely rare. So I got a second opinion and they said the outside filter needed to be replaced. It was replaced and worked for one day. Then another company came out and this guy openly said he was struggling to diagnose the problem. He thought it was the compressor after doing a few checks but his final check said no.
The fourth guy came out looked at the install and noticed some issues. The original install company didn't wire the system correctly for my two stage system. That worked for an evening but he had to come back. The inside unit was missing a valve that should have been part of the initial install. That has the system working for about two weeks now but we're still on pins and needles.
Every company I used was "highly recommended", especially the install company. The whole thing made me feel like an idiot and maybe I was but I don't know how to work on an A/C system. I'm currently very grateful I didn't just take the first company's recommendation because it was an very expensive job.
If you say you hate the state of politics in this nation and you don't get involved in it, you obviously don't hate the state of politics in this nation.