1. If you are a user of Haagen-Dazs Gift Card, you can contact the customer service phone of the platform and provide the card number for balance inquiry.

2. You can also pay attention to Haagen-Dazs WeChat WeChat official account or applet, and check the used and unused vouchers in the "My Voucher Package" in the personal center.

Both methods need to provide the card number. If the card number is ambiguous, you may need to go directly to Haagen-Dazs' store for help. May be based on the consumption records or other information to help retrieve the card number. Please note that under no circumstances should you disclose your personal information to an untrusted third party.