Very poor diagnosis! They said the problem was my ...

Very poor diagnosis! They said the problem was my cat converter, when I argued it with them explaining I just had a brand new one put on it, they blamed my spark plugs. They failed to tell me there are 2 on my car!! Its the one I didn't replace. Then they failed to tell me about my air bag being on the recall list! As well as 2 other recalls! Won't be going back. Won't recommend.