Accidentally got on the tollway twice once in July...

Accidentally got on the tollway twice once in July 2017 and Oct 2017 got off at the first available exit and and now I have to pay $10.45 plus $35.00 in late charges, they said they sent me letters I've never received anything from them the toll authority now I'm in collection.
Let that be the reason why I will not get a toll tag and I've set my GPS to avoid all toll roads refuse to give them any money.