I need to get a copy of my tax returns so I can file 2019 and the only way I can get them is through their online process, where you verify yourself 6 different ways and the final verification is entering your cell phone number, and somehow they use that through t-mobile to verify I am who I am and I think send me a text message.
There's a thread exactly what I"m experiencing here, it's marked as resolved, but it isn't, if you read the comments.
Due to Covid19, this is the only way to get a copy of prior tax return.
My CID and name on account matches what t-mobile has. I've been a t-mobile customer with the same phone number for 14 or 17 years.
Help is appreicated.