On XXXX XXXX, 2015, I faxed a letter to Transunion asking for a few items to be placed under investigation. I received a letter from Transunion dated XXXX/XXXX/15, stating they do n't understand the nature of my request. My letter was very clear and concise as to what it is I am asking them for. They have delayed the process now for XXXX days, which is very unacceptable and they have failed to conduct a proper investigation as they are supposed to begin the investigation within a certain timeframe of when the request for dispute is received.