[Avodah] Reading the Haftorah

[Prof. Levine]

Due to the inclement weather in Brooklyn my wife went to a nearby 
Shtiebel to hear Parshas Zachor.  When she came home, she expressed 
her surprise that they did not read the Haftorah out loud.  She asked 
me why, and I could not give her a reason. I asked some people who 
daven in this Shtiebel what the reason is for not reading the 
Haftorah out loud, and no one seemed to know.

Can anyone enlighten me so I can enlighten my wife?

Yitzchok Levine