Other Fuel System Tank Assembly problems of the 2011 Volkswagen Golf

I was driving on i15 southbound, the engine malfunction symbol appeared on my dash board and all of a sudden the car lost power and stalled. After paying over $800. 00 in towing fees to the nearest vw dealer in ontario California. The dealer is asking if gasoline was put in the tank. They are saying that metal shards were found and gasoline is the only cause of that malfuction. I am the only driver of the car and I have never put gasoline. I alway fill up at the same gastation due to the fact that not all gas station have diesel.

We filled up the tank with diesel at gas station on the road and the car started stalling 3 days later. It would only start after an hour of "rest". After 3 of these incidents, we took it to the dealer to find out that the car had gasoline mixed with diesel, or "contaminated fuel". They flushed the car and changed the filters at a cost of $1275, but warn that it may require a full overhaul! (cost estimated at $8k). So I asked, how I am suppose to know what's good diesel or not? is there a test? some way of knowing? the dealer had no suggestions nor guidance on this regard. Now we find on the web forums, that this is not an isolated case and that there are many cases (in fact the dealer mentioned a few were in the shop for the same issue) escalating this issue from the random misuse of gas or contaminated gas. Net, there's an issue when you have a car you can't rely on because of the diesel supplies. I am very disappointed and concerned that this new car will stall again and leave us stranded.