The problems continue as the CTA rolls out its new Ventra card system.
Thousands of people trying to enroll into the Vetra system had to wait on the phone with customer service for up to an hour.
According to the Chicago Sun-times, of the 10,000 people who called by Monday afternoon, 7,500 pushed zero to speak to a live person.
The Ventra call center was deluged with more than 10,000 calls by midafternoon, resulting in 33-minute average waits to talk to a live operator, the CTA said.
Officials plan to double their customer service representatives.
Thousands of Ventra cards are also still in the mail, after CTA promised riders they would be delivered since late August, CTA officials said.
Riders can still use magnetic stripe cards, if there’s already a balance on them.
Chicago Card Plus customers who haven’t activated their Ventra accounts can continue to have money automatically loaded from bank accounts or credit and debit cards onto their Plus accounts until they receive their Ventra card and activate it, the CTA said.
Nov. 14 is the last day to use Chicago Cards and Chicago Card Plus cards, officials said.