Legal analysis: you can call the tax service hotline 12366 to report to the tax authorities. Issuing invoices is the legal obligation of operators. Providing consumers with shopping vouchers or formal invoices is an obligation that operators must fulfill. If this legal obligation is violated, the operator must bear the corresponding legal responsibility. Consumers can therefore report to the tax authorities, order them to make corrections within a time limit, or impose a fine of less than 1 10,000 yuan. Article 19 of the Measures for the Administration of Invoices in People's Republic of China (PRC): When units and individuals sell goods, provide services and engage in other business activities and collect money from outside, the payee shall issue invoices to the payer; Under special circumstances, the payer will issue an invoice to the payee. Measures for the Administration of Invoices in People's Republic of China (PRC) Article 20 Units and individuals engaged in production and business activities shall ask the payee for invoices when purchasing commodities, receiving services and engaging in other business activities. When obtaining the invoice, you are not allowed to change the name and amount.