To check your BuyMac gift card balance, go to Sitemap page. Once there, click on Chat button to contact their customer service and check your balance. You can check BuyMac.com.au gift card balance online on our website, or call BuyMac.com.au at 1800 289 622. You can also visit any BuyMac.com.au store and inquire a cashier to check the balance for you.