To change your credit card limit, change your existing Westpac credit card to another Westpac credit card or change other details such as your address or the name on your card, call our Lending team on 0800 177 277 (8am - 6pm, Monday - Friday and 9am - 3pm Saturdays), or from overseas call +64 9 353 5848 (international toll charges apply), or visit your nearest Westpac branch.