my.gov, filing overseas and accessing tax info

[#1]

I live in the US, I've been living overseas since 2013, but briefly stayed in Australia in 2019, during which I worked the election. 

I have not recieved any documents from the AEC, but am trying to file my taxes. 

I cannot access the my.gov website as I do not have an Australian mobile phone number. 

I have tried contacting the ATO, livechat services and even my member of parliament to no avail. Each shunted me on to another department or address, all leading back to logging in to my.gov, which I am still unable to do. 

Any suggestions for a way around all of this tape? I just need the income data and I ought to be able to file via post, but this seems an utterly unreasonable process for what likely will result in a reimbursement of less than 100AUD in my favor. 

[#2 · Accepted solution]

@Punished 

If you lose access to the mobile phone you use for myGov codes you may be able to update your account with a new mobile number so you can sign in to your account using myGov Access app.

The myGov Access app creates a one-time use code on your mobile device. You must update your sign in option in 'Account settings' before you change or remove the app from your mobile device. You can download and set up myGov Access on your mobile device from the App Store or Google Play.

If you're unable to use the myGov access app code, you'll need to create a new myGov account and relink to ATO online services. If you don't have the required information to link to ATO, you'll need to phone us to request a linking code.