Great Lakes Hyundai of Dublin

I came to look for a new Hyundai Sonata, the sales person was friendly and professional. After the test drive we started talking price, basically we started with list price, minus rebate , came to $18.495. T was friendly and professional. After the test drive we started talking price, basically we started with list price, minus rebate , came to $18.495. Then he asked me what I was ready to offer, I needed to sign for my offer, so I started low, $15.000. He came back from the sales manager, price unchanged, so then I said we are done, got up and started to leave. Then the sales manager came over and asked me what I was trying to do, told me my offer was ridiculous. I told him , to get a car at the lowest price. Then he said they did not need my business , as I left we basically got into a heated argument, (faces 1 inch apart), very upsetting, has never happened to me before. Will never go to this dealer again. More