This is the most crooked company I have ever dealt...

This is the most crooked company I have ever dealt with. I submitted all required receipts and called when claims were rejected to learn what additional paperwork was needed. I submitted the additional paperwork they requested. The company waited until the deadline had passed to submit additional paperwork to reject a large claim ($1,600) citing that they needed an additional "letter of medical need" when I had already submitted both the original receipt and an itemized invoice as they had requested. This company does everything to get out of paying claims and is highly unethical.