most people would not know this. What about the other issues?
Not even gonna front on a gas leak...leave that to pros. I've replaced gas lines that were black mallable iron...that's a cut and replace with nipples and coupling type job but your average citizen isn't trying to be bothered with that. You gotta cut out the pipe, remeasure....probably thread your own nipples. shyt is work.
My point was that some things you shouldn't even need to harass folks over. A fridge should be defrosted annually off gp. You wouldn't believe fridges I've seen replaced that didn't have a single thing wrong except ice was blocking airflow. Some Plumbing issues are easy to fix if you have a way to shut off your water supply ie a valve.
And there are plenty of good instructions online for many an issue.
Now if you don't feel comfortable with something don't be crazy and make a mess. Lol
Still doesn't make what these creeps did right but...like I said it's pretty common and sometimes it's consensual as hell. Don't cape too fast brehs.