hyundai santa fe 2WD

Who drives a Hyundai Santa FE 2WD, 145 hp and also has transmission noise ? With me it is a “singing or shouting”, not loud, but to hear clearly,most clearly in the 4th and 5th gear between approx. 60 to 75 km/h. The dealer says: “That’s what all do and does not represent a shortage”. I drive the car (new car) now 5weeks, have returned about 1000 KM and the noise is unchanged. Thank you for messages tharjo