I took my car in for a check engine light and to h...

I took my car in for a check engine light and to handle recalls. I called a week ahead of time and made an appointment. When I got there, there was no info in the system. They got my info into the system and then tried to upsell me on $350 of suggested maintenance work (prior to actually working on my car), which I declined. They completed the recalls and for $580, the issue causing my check engine light was fixed. I got dropped off at the dealership when they told me my car was ready. I get in my car and the controls on the steering wheel, turn signals, and windshield wipers don't work. I immediately turn around and inform my service advisor of the issue. He immediately tells me this issue can't be caused by any of the work they've done. He agreed to do a diagnostic at no charge (after I complained) but maintained I would have to pay for these additional issues (which didn't exist prior to me dropping my car off). They also didn't have any loaner cars for me, so I was essentially stranded at the dealership at this point. They shuttled me back to work; I had to find a ride back home at the end of the day. Four days later, they still haven't looked at my car, no loaner car, no resolution. I'm honestly a bit speechless that the situation has gone on so long unresolved. I've tried to be patient but this is too much. I'm going to speak to the manager today, as they've had my car for a week tomorrow. If they do the right thing and make the repairs free of charge, I will update. As of right now, I believe they intend to charge me for issues that didn't exist when I brought the car in.