The Illinois Tollway issued a statement at about 10:56 a.m. Friday announcing a software issue that could result in bad charges or refunds.
On the morning of Dec. 9, the Illinois Tollway's I-PASS system encountered a software issue and erroneously began a cycle of account charges and refunds to I-PASS accounts that were scheduled for automatic balance replenishment.
As a result, I-PASS customers may notice unnecessary charges and refunds from the Tollway on their credit and debit cards.
"We are currently working to ensure that all I-PASS automatic replenishment accounts have been correctly refunded," the statement said. "We are also working with our banks to ensure that customers do not incur overdraft fees as a result of this computer problem."
The Tollway is working to proactively alert customers who may have been impacted by the software issue.
"We apologize to our I-PASS customers who may have been surprised by this account activity and urge them to call our Customer Call Center at 1-800-UC-IPASS with any questions about their accounts," the statement said.