If you want to return the product, and the store tells you that you need a check, we want to say that there is no such provision in the Consumer Rights Protection Law, if you have a bank card statement, you can name the time and date of purchase, and the manager at the cash register finds the transaction. If the store does not have a cash register, then such a store grossly violates the law, because according to the Tax Code of Ukraine, the use of PPO (cash register, fiscal registrar) must be: all stores and online stores in the form of FOP that sell technically complex household goods, medicines and medical goods, jewelry sellers, and organizations that provide paid medical services.