Other Fuel System Tank Filling/charging problems of the 2005 Mercedes Benz E350

We own a 2005 E350 mercedes with only 83,000 miles on the car. We are the original owners and have maintained the car for the entire time we have owned it. A month ago we noticed a smell in the garage after filling the car with gas. It continued to get worse after filling the tank so we took the car into mercedes of cinti on montgomery road on April 2, 2014. (this is where our car has been serviced since we bought it) they flipped up the back seat and pulled up the black liner and we could see that there was gas in the car. That was scary to actually see gas was moving around inside our car just under where people would be seated. Mercedes said it was due to a leak at the top of the tank. In total, we paid $2073. 21 to repair it. We picked up the car on April 4, 2014. We then googled mercedes gas leaks and found there was a associated press article on this in March 2013, other blogs and your article. My husband called the dealer and told him about these articles. My husband was referred to a corporate man at mercedes, whose name was simon. After going back and forth, they sent us a check for $1,573. 21, thus we still had to pay $500 for the faulty tank. We wanted our gas leak to be included in your investigation. We feel this should have been a recall and it should have been fixed at no charge to us. I know mercedes is aware of the problem because they hired a law firm to defend them. I thought it was odd that the statement by the mercedes attorney does not deny the problem. They actually admit it exists but say it is not a safety hazard. Gas leak not a problem, go figure.