HCTRA EZTag charges

Just got a refill charge from my EZTag account but usually only go through tolls 1-2x/mo. When I looked at my statements every month there is a 10% “Excuse toll” charge….is this like an admin fee? This doesn't show in a transactions list so I've never seen it before investigating why my tag was refilling early. I have 2 tags, don't go thru tolls often but the fee is paid from the account so its not a violation?