is this a scam or legitimate

i have never gotten a letter like this for tolls despite living in florida for 7 years now, so i have most definitely been through my fair share of tolls. not too long ago (sometime after the summer) i paid all of my outstanding tolls which amounted to a little over $100, and the spanned over a few months. wouldn’t this toll have shown up then? i’ve tried to look up the company and found conflicting information about it. i also went to go pay it online and it’s $15 more online and doesn’t explain why. what do i do about this is it legit or do i just ignore it