Posted - 20 March 2017 19:38
I had something similar with EDF Energy recently. Refused to answer any security questions and the caller got a little testy so I complained.
After escalating my complaint they have now confirmed that I was right to be concerned and have advised that they are reviewing their procedures so that customers never have to give out security information on incoming calls. They may seek to agree a security question and answer with the customer so that the customer can ask the caller that question first before considering whether or not to give out security information.
As others have said, no level of paranoia on incoming calls is too much paranoia, especially after the recent media coverage of two entirely fraudulent call centres in India using stolen Talk Talk data.