O2 is urging customers to 'call three digit number and contact bank' in new alert

Mobile phone network operator O2 is urging customers to call a three-digit number and, if necessary, contact their bank as ...

O2 issues new text and email alert urging customers to 'call three-digit number'

Mobile phone network operator O2 is encouraging customers to dial a three-digit number and, if required, contact their bank ...