I'm not to happy with this dealership, just 2 week...

I'm not to happy with this dealership, just 2 weeks after purchasing my vehicle I was having issues and they wanted to charge me $175.00 to do a diagnostics on it. I knew it wasn't going to be free but come on I had just got the car. I was hoping to get a break.... Well more less a "discount" I know where I'm not going for my next vehicle purchase!