Julie Miller says that eight times between 2009 and 2011 she contacted the credit reporting agency, filled out paperwork and highlighted the mistakes.
But Miller says the errors were never corrected.
She says that included erroneous accounts and collection attempts.
Miller says she discovered the mistakes when she was rejected by a bank when she wanted to open a new account.
"We did put some of the things off that we had planned to do during this phase because we couldn't get credit," said Miller.
Equifax told ABC News: "We are very disappointed in the jury verdict and we are exploring our options."