I have been unable to access any of TransUnion 's services, dispute any information, or place a freeze on my file due to the fact that my current address is not on file with them. I have sent the multiple forms of documentation on multiple occasions. Some of which I received no response to, other times I received requests for the same information I had just provided them. Most recently I sent them a notorized letter certified mail ( so that they could not ignore it ) with the requested documentation attached. I mailed the attached letter on XXXX/XXXX/15 and received an attached return receipt indicating that they received my letter on XXXX/XXXX/15. In response ( although with all our correspondence it has become difficult to track which letter is in response to which letter ) I received the attached letter stating that XXXX or more of the documents that I provided them was illegible. I have attempted to call the phone number on the letter to verify my address through that method on multiple occasions, but they are " unable to retrieve the identity verification questions at this time '' every time I call them. I have grown tired of this endless back and forth with TransUnion and the expense of photocopy fees, postage, notary fees, etc. Both XXXX and XXXX were able to update my address with relatively little hassle on my part.