2005 Accord
 

It seems when the warranty goes, so do a lot of things on the car. I just got an oil change from a Honda dealer. First, they did not top off all fluids! Second, they charged me $31 when I had a $27 coupon. Third, my air conditioner seems to either not be cold or it is stuck on a certain temperature. I am not sure what this is related too, but my coolant is now down to the minimum. What could be the problem?