1. Compare other information: carefully observe the prices and quantities of other commodities on the receipt. If the electric kettle is the only commodity with no clear price tag, you can guess the price of the electric kettle according to the price range or characteristics of other commodities.
2. Ask the clerk for help: you can go back to the supermarket to consult the staff or clerk of the supermarket with the problem receipt. They may be able to help you determine the price of the electric kettle through system records or other means.
3. Contact the supermarket customer service: If necessary, you can contact the supermarket customer service phone or online to provide them with the detailed information of the receipt and the electric kettle and seek their help and explanation.
4. Keep the receipt backup: If you need to buy an electric kettle before solving the problem, you must keep the original receipt backup and try to keep the relevant information of the electric kettle, such as model, price, purchase time, etc. In this way, if necessary, you can communicate with the supermarket to check it as a voucher.