Experian has inserted a phone number, into the credit report they maintain on me, from those committing fraud and stealing my identity to take out a credit card in my name. They apparently attained the number from XXXX XXXX, the company issuing the fraudulent credit card in my name. I have been the victim of ID theft four times in the last XXXX years, with the last XXXX occurring when I had a freeze on my credit. However, the thieves have gotten credit cards from XXXX XXXX each time anyway, using my credit with Experian and XXXX as well. Now they have allowed the thieves to insert their telephone number in my credit file. Additionally, Experian has mysteriously lowered my credit score XXXX points, for no apparent reason when there has been no negative reports or activity. Please investigate to get Experian to stop being part of the fraudlent activity.