WTVM reports that a former Blue Cross Blue Shield customer service employee has pleaded guilty to filing false tax returns, wire fraud, and aggravated identity theft.  Danielle Wallace admitted to filing 180 fraudulent tax returns and stealing nearly $500,000. The false returns used personal information obtained from Blue Cross Blue Shield members who had called the customer service number for assistance.     The Ledger-Inquirer adds that Wallace filed the fraudulent tax documents between Jan. 1 and March 24, 2014, and used the customers' information through a tax-preparation business that she owned, Simple Cash 1.;