On XXXX/XXXX/15 I mailed a dispute letter and an investigation request for XXXX items on my credit report with Experian by certified mail, which they received by certified mail on XXXX/XXXX/15. Experian sent me back a form letter which seemed to me to be both threatening and insulting and a blatant attempt to avoid investigating the items in a timely manner. I believe the attached documents reflect that the dispute item was sent to them correctly and in the form they require. I did not respond to the form letter, as my accountant advised me this would delay the investigation, which is what they wanted. I have since received responses from the other XXXX bureaus, but none from Experian, which indicates they decided not to investigate my complaint. I believe this a blatant violation of the Fair Credit Reporting Act and was an effort to intimidate and coerce me into not pursuing the correction of faulty information on my credit report. I wish to file a complaint against them.