I wish to amend my mobile number in the event Tesco wish to contact me regarding my credit card - I do not otherwise bank with Tesco or have any insurance with them . When I go to log on to my credit card - it keeps saying I need to logon to my Bank or Insurance and does not recognise my username for my credit card? Any other Tesco Credit card members had a similar problem and how did you amend it? At the moment if Tesco wish to secure check me as a customer the code is sent to a previous mobile number. Any assistance will be brilliant.