What happens if my Single-Use Card purchase is declined? If the purchase is unsuccessful, the Zip Single-Use Card will still be valid and you can try to complete the purchase again. If the error is ongoing, you may not be able to use a Single-Use Card to shop on that website or with that retailer. Related articles Why was my Single-Use Card purchase declined? Refunding an Order Buy Now Pay Later - Code of Practice How do I contact Zip Support? | Zip Australia Zip Money Repayments | Flex vs. Instalment