Front Seat Head Restraint problems of the 2019 Ford Expedition

This model of Ford Expedition advertises that infant car seats, convertible car seats, booster seats, and high back booster seats could be accommodated in 4 of their seats. However, the third row has automatic seat folding and headrest folding features which make it impossible to remove the third row headrests. When placing a high back booster seat in one of the third rows, the seat does not sit flush in accordance with the car seat instructions because the headrest is not flush with the seat. Since you cannot remove the headrest, there is no possible way to safely install this particular type of car seat. In my conversation with Ford they are now aware of the problem, but are unwilling to make any changes or purchase the car back. I purchased the car 3 months ago in anticipation of having a 3rd child. It is required that I put a high back booster seat safely in the 3rd row to accommodate my children, yet I cannot do that safely. I am taking the car with the seat to the police station tomorrow to see if they can put in writing that there is no way to safely install the seat.