Graudian...I am unsure why you had to lie on both occasions ?
In the first instance, you could simply have replaced the receiver, and on the 2nd, politely told the interviewer that you would rather not say.
I have been Polled many times, the latest earlier this week by 'phone.
I had no problem in telling people the truth, but if I was shy about that, I would have refused to answer, as is my right and as was your right as well.
The issue of people lying to Interviewers is obviously an issue, but all Polls have a margin of error, to take that into account. Perhaps that margin needs to be larger.
But if lying to Pollsters is an issue, why did not a similar number lie to the Pollsters gathering info for the Exit Poll. It seems counterintuitive to think that people would lie in some Polls and not in others.