Hate to say it, but this was your fault. How can it be your fault? Because you did not watch them when they did the oil change. Simple as that. If I can't see the car when they work on it, or change the oil, I don't use that dealership.
Example. I once had a Buick and because I had a coupon from the Courtesy Group (Many dealerships in the Orlando area), I had Courtesy Buick change my Oil and Filter. I was watching and I saw the tech install a white filter. Now I know that the GM AC Filter is blue, so I complained. Turns out it was a "Formula 7" filter that small shops use for oil changes. Dealer said "Well if you wanted an AC Filter you should have asked for it, and it would have cost you more". I phoned GM and told them that their Authorized Dealer was using not GM parts. GM did nothing about it. (I drained the oil and changed filter after only 1000 miles). On another day, I talked with a "Service Advisor" at Courtesy Chrysler, and he told me that they also do the same thing. Done at all Courtesy Dealerships. Always watch your car.
I now bring my own oil to my local Ford Dealer and I pay them for a Stock Motorcraft Filter and their labor for my oil changes. I've had no problems with them doing this for both my cars, seeing as how I use an oil that they don't sell.
Bob
03 Marauder
02 Continental
01 GoldWing