When a PN employee calls

[#1]

One of my credit card issuers uses a personalised picture and text combination on their website when I log in to help ensure I'm not caught out by a phishing link or similar taking me to a false site, it wouldn't be difficult to set up a 'reverse password' to achieve the same on telephone calls as suggested by Mayfly (simple idea but really good thinking).

[#2]

One of the Banks, that I used to be with, agreed to a reverse-password system. However, when they phoned up, refused to provide it until AFTER I had cleared THEIR Security!!
Duh!! 

[#3]

I am sure it would be quite easy to actually provide a generic support number. What I meant by my comment was that it has more to do with operation reasons than technical.

[#4]

...that is choice and not impossible. 

[#5]

Quote from: plusnettony

I am sure it would be quite easy to actually provide a generic support number.

Easy but useless and inapproprioate.
It needs to be a number which is answered (not multiple-choice press this for that nonsense) when you call back, by someone who can deal PROMPTLY AND EFFECTIVELY with a customer who says simply and honestly - "You called me".

[#6]

Nope if it was from one of the PN recognised numbers then it would give MORE precedence than a withheld number, not that it would/should be takes as actually them.