I got one of these yesterday. I was surprised they didn’t even bother spoofing a US number.

Inconsistent toll by tag enforcement probably isn’t helping. In Orlando I had a bill from one agency and and account with another. If it reads my electronic tag it pays from the one account, but if it mis-reads it charges by tag in another agency… I nearly got a ticket despite making sure my main account was paid off. The confusion could have toll notices from an unfamiliar source seem valid.