AUL Corporation review: Warranty on a chevy bought from Nissan

We bought a Chevy Traverse from Athens Nissan. We also bought the extended warranty from the dealership AUL Corporation.. Guess What? We now have a transmission issue that the warranty company is refusing to cover. They are stating that there was a light that came on and we did not get the car in to be looked at in time. IT WAS THE NEXT DAY! And we have documentation proving that we had that looked at previously at a chevy dealership and there was no issue with the transmission at that time, it was a sensor, but when it came on again, we went straight to the dealership. Athens Nissan sold us a very expensive extended warrarty that now that we need it , its worthless. Now we have a car payment on a car WE CANT DRIVE