I noticed on my this month a "Flat Rate" charge for my bikes only trip on the 407 because they missed me on the exit, but based on the trip calculator that is in my favour if I remember where I got on correctly
Same for me, except it was on entry. My flat rate was $3.20. I did not know what it was until I called them. I said oppps, I shouldn't`t have called you.
He laughed and said,"Once it is entered they can not change it to the correct rate" We both laughed and I said goodbye.