When will I get the check for amended tax return? I filed the tax form last June and mailed to IRS.

[Critter-3]

Mailed in returns are still being processed and amended returns are in line behind original returns which are about 7 million deep ... expect it to take quite a bit longer. 

Try  calling to check the status of your refund at the IRS website.

https://www.irs.gov/refunds

800-829-1040

First choose your language.
Then 2
Then 1
Then 3
Then 2
When asked for SSN do nothing it will ask twice
Then 2
Then 4
You should then be transferred to an agent, but there is likely to be a long wait.

If they can't assist you can try the Tax Advocate in your state. most are working remotely and have a backlog. 

https://www.irs.gov/advocate/local-taxpayer-advocate