STBXH seriously just had the balls to ask me of I got the email about the cell phone plans and which plan did I choose?

I want to reply "none of your business" but that goes against DB'ing

I have only responded with "yes, I took care of it"

Me:33 H:36
T:13 years
M:10 years
S4
Separated 05/15
H Filed 06/15