Urm it’s called a security check. So you’d be happier with a company giving out your name and address to someone on the phone who may well not be you
If a company calls me, it should be me doing the security check!
If they don't trust that they've got the right person, then they shouldn't call. I have refused to give details over the phone and in the end they've said they'll write to me instead. Fair enough.
On another occasion we compromised on them giving me the first part of the postcode and I gave them the rest.
But I will not cooperate with security checks on incoming calls. I once had a call about a meter reading. They called me to ask me to do one, but insisted I went through a security check. I said a meter reading wasn't personal data but they wouldn't; back down, so I out the phone down.
They are asking you to confirm the details they have in front of them. It’s called data protection It is not. If these companies think it is, they all need to go and do some data protection training.
If you call me on the number I have given you, that you have on your systems, then you assume that number is correct until you are informed that it isn't. One of the principles of data protection is keeping information up to date, but that does not involve making someone do a security check when you have called them.
Obviously the situation is different if you call into an organisation although even then they should use common sense. Not all queries require the call centre operative to access your account.