My son took the chevy cruze to get a window fixed ...

My son took the chevy cruze to get a window fixed and oil change. When he got there he was told that they would do a diagnostic on the car to find the issue. This of course is pricey to begin with. Next they told my son that the extended warranty expired at the end of November and the cost would be $600. I told my son to pay for the test and oil change and get out of there as fast as he could. He took the car to Gravois auto repair and within 30 minutes car was fixed for $250. I can t understand this dealership not taking care of the window issue using the warranty that expired at the end of November. I have purchased many vehicles and have my oil services done at this dealership. Very disappointed. Not sure I ll be doing business here any longer. I wish Dave senior was there. This would not happen on his watch.