I disputed medical collection accounts on my credit and sent these disputes out via USPS certified mail on XXXX/XXXX/15. On XXXX XXXX, I received a letter from Experian stating that they decided the disputes were not sent by me and that they would not be initiating any disputes based on the suspicious correspondence. When I sent my dispute, I included my ID SSN card, proof of address and also marriage certificate. All of my information matched- name on ID was name on marriage certificate, name on SSN card matched maiden name on certificate. Address on ID matched proof of address, etc. I have not disputed anything for a couple of years, and there was absolutely no reason for them to say it was suspicious or that it did not come from me. I am sending a notarized letter including this complaint, proof of mailing the disputes, and the original dispute paperwork, along with other pieces of identification. This is just a blatant refusal to initiate my disputes.