2008 Nissan Altima seats problems

Tl*the contact owns a 2008 nissan altima. While driving 60 MPH, the contact struck debris on the roadway. As a result, a piece of metal became lodged in the fuel tank and was hanging down. The failure caused a fuel leak. The vehicle was towed to the dealer and they are replacing the fuel tank. The dealer stated that whatever he struck caused gasoline to leak from the fuel tank. The contact stated that the location and lack of protection of the fuel tank a safety issue. The failure mileage was 15000.

Drivers seat cushion moves side to side when making turns. Started at about 5,000 miles and gets worse with time. Taken car to dealer three times, first time supposedly was fixed and the next two times could not be duplicated by tech and no action was taken. Appears seat could brake during accident. The seat can be moved by shifting body weight. Doesn't feel like seat frame is loose from the floorboard but just the cushion is not secure to the seat frame.