To pay a TOLL-BY-PLATE invoice, call 888-824-8655, as of 2015. If unable to pay by phone TOLL-BY-PLATE customers should send payments via the US mail to the address listed on the website or make electronic payments using the website's interface.
The number listed on the website to pay TOLL-BY-PLATE invoices is for the program's call center. Information listed with the number indicates that the call center is open Monday through Friday from 7 a.m. to 7 p.m. and Saturdays 8;30 a.m. to 5 p.m. The website also states that on Mondays the call center experiences extremely high call volume, so people experiencing difficulties should call back on another day of the week.
The website also lists customer service center addresses and hours of operation for the TOLL-BY-PLATE Turtle Creek, Boca Raton and St. Petersburg locations on its contact information page.