TransUnion Credit Reporting Complaint

TransUnion Credit reporting department,

Incorrect information on credit report Information is not mine Maryland

After several low quotes for car financing, I decided to research my credit ( freeannualcreditreport.com or something like that ) and saw that my information has been merged with that of my father. He is - - -, I am - - -, same current address but obviously different date of birth and SS #. On the website I was able to see this and dispute it with - reporter ( - ) and not the other - ( Transunion and - ) due to failing the initial security questions which all used my father 's banking history. At present I have recieved some confirmation from Experian that negative information has been removed and have yet to make positive contact with Transunion & -. Do I have to do this with every info provider? Will it update the other - once I have done it on -? Young married couple in desperate need of financing. Thank You.