turbulance

My seat has gone saggy and now has a tear between the holes . Dealer has taken pictures and sent to lexus i phoned today to see what was going to be done about it car only has 18000m on it to be told there "experts" have looked at the picture and it must be something in someones pocket i know for a fact that this is not the case . I asked to speak to some one higher up to be told i would not get any higher up then them ! wondered what should i do now ??? has this happened to anyone else ?