Sears Auto Center

I dropped my car off for an oil change and when I came back they told me I had such a bad oil leak that they couldn't do it. They did go ahead and put 3 quarts of oil in so I could drive it somewhere else. I went straight to my car and left. No one else could look at my car that day so I went home. In the morning I woke up to check my car. When i opened my hood my oil cap was missing. I called them immediately. They were denying even taking it off. So I questioned how they put oil in it. Then they said that I must have taken it somewhere else after I left there. Which I did not. Then the next day when I talked to them they tried telling that my cap was broke and had green tape holding it on when I brought it in. That was a lie. They tried making every excuse in the book. I finally said I wad going to leave a bad review and he than offered me a free cap. Also come to find out I don't even have an oil leak like they said.