@dewilson2023 Sorry for this late reply. It's been a really busy day for me. I mailed my stuff in about 2 years ago but if they accept fax, you would need to call and get the information from them. Since you had a letter, it might have stated to mail it in but for fax, you would still need to know from them what it is that needs to be faxed in (or mailed). I hope this helps. I also hope that they can hurry and process your refund. I know exactly how you feel right now.