Mercedes-Benz of Westmont

I bought a used 40K vehicle and supposed to have a thirty-day warranty. The next day the check engine light was on and I sent a text to my salesman Mo. They seem to be taking advantage over my living out of state and have ghosted me. I called a week later, and Mo happened to answer. He said he was standing there with the manager and would call me back in a few minutes. That was last week. Van gets fixed tomorrow, not sure what that's going to cost me. Also said they would reimburse me for me Uber from O'Hare but didn't. The people are nice enough and the dealership is very nice but.........