1:37 PM PT -- A rep for Miss America tells us, "The Miss America Organization supports Cara. It is disappointing that she chose to air her grievances publicly not privately. Her letter contains mischaracterizations and many unfounded accusations. We are reaching out to her privately to address her concerns."

The reigning Miss America is railing on the org, saying they have silenced and ignored her and instead focused all of their attention on former Miss America and Chairperson of the Board of Directors Gretchen Carlson.

Cara Mund is outraged that the Miss America CEO as well as the chair of the org "have silenced me, reduced me, marginalized me, and essentially erased me in my role as Miss America."

Mund claims she's been told she's "not important enough to do big interviews, and that the major press is 'obviously' reserved for Gretchen." She's certainly strongly insinuating ... either Gretchen or her allies at Miss America are pushing her and the #MeToo movement and that's all they care about.

Mund says she's been disrespected, belittled and literally erased from Miss America ... her photo was even removed from a fundraising website page and replaced with a past winner.

She believes the org is pushing the #MeToo movement and the message it all started with Gretchen revealing abuse at the hand of FNC head Roger Ailes. FNC was ordered to paid Gretchen $20 million.

Mund says she's been banned from posting comments on social media. She says she's been told she's "bad at social media" and that's why sponsors have dropped out of the Miss America org.

She even says she's been sabotaged ... told to show up at the wrong locations so the org could paint her as flaky.