Towball height in a new car question

Dr Nigel

I've just gone to pick up my new Hyundai Tucson from the dealer, with fitted towbar.

The height of the tow ball seems rather high at 55cm unloaded.

The dealer stated he didn't know anything about towing, and they had outsourced the fitting.

I'm pulling a small pop up caravan, and my exisying car towball is only 35cm high and this seems to work perfectly.

I've refused to pick up the Hyundai until I get advice....thank you in advance for your comments.