Social Security Questions? Ask a Social Security Expert
It is possible that the letter was mailed but there is no way for any one here to verify that for you.
This letter is sometimes called a "budget letter," a "benefits letter," a "proof of income letter," or a "proof of award letter."
Your wife should call again and make the request or she can go online.
Use a "my Social Security online account"
If you have any other questions, please ask me – I’ll be happy to respond. Thank you!