if the vehicle is invoiced in July, yes you will have to pay the additional 72k, also what was the delivery time if it was june then also it could have been delayed and taken to july. I would tell you to pay the 72k as the vehicle will still be 1725k around about considering that new price is 1956k.
First ask them to show the invoice and make sure that all payment are made on account of Pak Suzuki and not in the name of the dealership. Pay and get your vehicle if things add up.
PS invoice will always show the complete details of taxes and final amount so that should be what you paid.