Suspension Noise problems of the 2018 Lexus GX460

I went to new country Lexus dealer I complained three times they put a lot of mileage test driving it and kept over 24 hours and said there was nothing wrong with it. They still make the same noise in the suspension. I would like to tell people not to buy Lexus is junk I've driven 2 cars from this company and it sucks and is junk and please don't go there. They are round never return calls. All they want is your money. Again please don't buy Lexus cars, I've had almost 6 years of experience and is complete junk. Thank you.