NY Thru way Authority has an arbitrary 7' Tow Vehicle delineation in its rate schedule. Also charges per axles
L vs H height
1, 2, 3, 4 or more axles
You don't mention what you were driving,
If you were driving a 2 axle MH with a 2 axle trailer, your rate would be 4H max cost.
If you were driving a Pickup pulling a 2 axle fifth wheel or TT (pickup under 7' tall), your rate would be 4L much less than 4H
I had issues with a pickup with a TC, technically the TV wa under 7'.
Check your toll receipt, it will list the rate, If wrong call the authority for a refund.