RUDE CALL CENTRE AGENT

I called the Nedbank Call Centre. For security reasons, I was asked a series of questions which i answered correctly (to the best of my knowledge). <br> <br> The agent then asked what was the last deposit that was made in my account. i told her it was my salary, which was deposited on the 25th of September 2015 at 17:50. she asked for the amount, since i was calling from an open office where employees were listening, i asked her to ask me an alternative question since i do not want to disclose my salary (other people were listening). she then said, \Ok i will ask you an alternate question"";\""What was the alternative question\"""