Dris - I had the same with Barclays. They phoned and asked is that Mrs ...., I said yes, they then said they would have to ask security questions. I said I wouldnt respond over the phone. I reminded them that they had my phone number, I confirmed it was me when they phoned, why would I now give out personal details?
I told them to write to me if it was important. I never had anything come in the post, and feel sure it was just a selling call. How annoying are they.