It IS ok to respond or return a call. After all, we ARE gentlemen aren't we? Nothing wrong with returning a call or calling her back and saying something like, "sorry I couldn't take your call, but I had an important meeting in my office.
THEN you say this.."What did you want?"..(VERY IMPORTANT TO ASK THAT QUESTION)
Her: "oh nothing, just wondering how your day went."
You:"Oh, it went fine. I am very busy with (fill in the blank short and sweet..(NO COMPLAINING ABOUT YOUR WORK.. you are a busy man, but a happy man..)
Then quickly... change the subject and ask her... "how about you?"...
Let her answer and chit chat for a minute or so..
THEN.. GET off the phone politely.. Do not ask her anything else. Do not ask her out. do not ask her to do anything..
"Well, I am really tired and I am going to bed. I will talk to you later, bye"
