need help in re ordering cancelled pre booking deal

few of my order that i placed on prebooking were cancelled just before delivery, now when i see order summary, it shows a note
NOTE: Sorry, the order was cancelled due to unexpected logistical constraints. You can place a new order within 7 days. In case of any price difference, we will reach out to you within 48 hours of the new order being placed.

how will i get the price diffrence if i place a new order?
diffrence is huge i.e 5-6 times, thats why i need help of you all