To be fair to your dealer they are probably correct in that nobody else in the world has complained about this, reason is as far as I am aware it hasn't happened to anybody else. Phone customer services and raise a complaint about this.
2017 GLC AMG43 premium plus, night pack, leather, intel lights, 360 camera, side steps. = sadly gone
Now GLE450 Premium plus, Selenite, Black/White Nappa leather, Tech plus pack, Driving assistance pack, Tow pack, Off road pack, 22 inch wheels.