I'm glad that the op started this thread because I had a similar experience and I felt it was odd. I was asked if I would take the survey after the call Then ASKED if I would reveal my rating in advance. I said no and continued on. When I declined to reveal my rating I was asked why I declined and I told them that I felt it was inappropriate do so.
My feelings was that this was an outsourced foreign call center and that the agents had been instructed to ask the ratings by their superiors WITHOUT the blessing of UA. In other words, the contractor was trying to influence the UA mandated survey.