Emissions testing service near Layton, UT

After having my car for an entire day and charging me $200 for a $20 part that takes 15 minutes to put in, my car still wouldn't start the next day. I had to have it towed somewhere else where they told me they were unable to diagnose it, and also that the part that had been replaced at First Choice had been put in backwards!!! When I called them back to tell them this, they said there was no way the part could have been put in backwards and refused to compensate me in any way. I told him I would leave a bad review on every website I could think of and he was VERY rude and said he would sue me if I did that! I asked him on what grounds and he hung up on me. I'll be filing a complaint with the BBB. Don't take your car here!! They lure you in with their $17.99 oil change but they do schotty work and have HORRIBLE customer service. They are only getting a 1 star rating because they won't let me give a 0 star rating. I hope all the business he will lose over my reviews is worth keeping my $200.