PHILADELPHIA, PENNSYLVANIA, UNITED STATES - 2012/04/20: E-Z Pass toll booth. (Photo by John Greim/LightRocket via Getty Images) TRENTON - Nearly 80,000 drivers who traveled on New Jersey toll roads in March and April were erroneously billed an unpaid toll penalty fee despite never receiving a toll-by-mail bill.E-Zpass says motorists who received a $25 'administrative fee' will not have to pay the fee, and those who already paid will be refunded.A spokesperson says a contractor error caused the secondary notices to be sent out before first notices were distributed.The 79,000 customers represents 2.5 percent of the 3.1 million toll-by-mail notices processed by Conduent Inc.