Got a letter in the mail about unpaid tolls but I think it’s a scam?

It’s from Penn Credit on behalf of FDoT. It got sent to my old address in Massachusetts (my dad’s house) and it doesn’t say what car/license plate the toll incursion is tied to. The online portal says it was incurred last year, when I was still driving a car registered to my mom (who has the ez pass on autopay and had New Hampshire plates). The account has my name, but uses my old address’s zip code to log in/pay. I haven’t legally resided there in 4 years. Is this a scam or should I actually call and contest this?