Other Fuel System Tank Filling/charging problems of the 2003 Toyota Camry

We filled up our 2003 Camry le at costco (on a Monday). We shopped at costco and then drove about 17 miles to our home. We backed up our incline driveway and unloaded the trunk. We drove to safeway (about 2 miles away) that same day and dropped a relative at their house about a mile away. We drove a total of about 25 miles after the fill up at costco. The Camry was not driven for the rest of the week until Friday. On Friday the car was driven no more than three miles before it started to hesitate and then stalled. It did this four times before getting back to the house. We had it towed to the Toyota dealership for repair. We were told that we overflowed the fuel tank and the carbon canister was filled with gas. This caused the computer to stall the car out because it is sensing an over rich condition. The problem is we did not overfill the fuel tank and we drove it for far too long for this to be what caused the carbon filter to have gotten gas in it. Maybe backing up the driveway with a full tank caused the problem, but that is a flaw in the engineering of the car, not a mistake by the consumer. The repair and towing cost 780 dollars.