"Get redy for Medicare" booklet, do I need Medicare? I have VA insurance and on my wife's private insuracne already

I've called a few times to the medicare office but they won't or cannot answer me.

Trying to figure out if I am required to have Medicare?

The book I got in the mail said I am enrolled in Hospital Part A and Medical Part B starting Sep 2026.

I didn't enroll in these.

I have medical coverage through the VA, and am also currently covered by my wife's private insurance. Do I need to? If not what are the consequences?

Where can I find this info in writing?