When this happens with a call made to your mobile phone – it can even show the name as ‘Bank’ if that is how you have it stored in your mobile, leading you to think it’s a genuine call from your bank, when it isn’t. Do not confirm anything and do not start any process. Simply hang up.
The Telephone Preference Service cannot protect you from these types of calls, as they are there to ensure genuine companies do not make contact if you have registered to opt out of receiving unsolicited calls.
The advice is simple, never enter into any business – especially financial with unsolicited telephone calls.