TransUnion Intermediate Holdings, Inc. Credit Reporting Complaint

TransUnion Intermediate Holdings, Inc. Credit reporting department,

Incorrect information on credit report Account status California

There was an unauthorized charge made to my Master Card credit card account issued by the - - - ( - ) in -, which I refused to pay. After much haggling, I paid off the credit card account IN FULL on - -, - and stopped using the card/account. The - then reported the account as a Charge-Off anyway ; so I wrote to the - and they responded that a mistake was made, but the credit reporting agency ( TransUnion ) STILL has not corrected my credit agency file, even after I submitted proof of my payment to the -, and the credit reporting agency continues to show the credit account as a charge-off! How do I get this problem corrected???