Retirement tax questions

A Customer service telephone number at DFAS is in the upper left on this page:

(Assuming you can't use the  Request for a  duplicate 1099-R, also showing on that page for some reason)

 

https://www.dfas.mil/retiredmilitary/

____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*