House plumbing woes

I'm a glass half full kind of person. I don't automatically suspect businesses to be predatory. Recently I've been unsettled how, over time, the most trusted and established business can change. The decades old HVAC company we've used personally and at church now routinely dispatches careless and dishonest technicians.  A couple weeks ago, I had to manage a plumbing problem because my husband was out of town. He has extensive knowledge and experience and we haven't needed anything that requires a professional. Our downstairs tenant had a blocked up toilet. I know the basics of household plumbing but I couldn't fix the problem with what we had on hand. So, I called a well established local plumbing company.  The tech was here a scant ten minutes and told me the job would be a thousand dollars. I told him I wanted a second opinion.  I contacted a second company. Another technician came. He said the same thing and told me I needed the septic tank drained which I knew I was not true. I had him unblock the toilet. He had to remove the toilet and address a blockage several feet down the line. It wasn't  a thousand dollars but almost. It's three weeks later. The problem is back.  My husband is here. The tech is scheduled to come back. I can't wait to see how this goes. If the company does the right thing by us, I will take the time to write a good review on Google and Yelp and Facebook.