Not getting notices for Certified mail Important Meds. From V.A.AND

I'm getting notices for All JUNK MAIL! But Not Certified TIME SENSITIVE Mail!( Meds from V.A.) Meds were sent back to V.A. Because I was NEVER INFORMED! THIS CAN BE LIFE THREATENING FOR ME! W.T.F.? Get it Together! I didn't know we have gone all 3rd world here!