It is tax evasion to sell goods in shopping malls without invoicing. You can complain and report to the tax authorities, tax hotline 12366.

The law provides that:

Article 35 of the Measures for the Administration of Invoices is under any of the following circumstances, the tax authorities shall order it to make corrections and may impose a fine of 1000 yuan; Illegal gains shall be confiscated:

(a) the invoice should be issued but not issued, or the invoice is not issued at one time according to the prescribed time limit, order and column, or the special invoice seal is not stamped;

(two) using the tax control device to issue invoices, and failing to submit the invoice data to the competent tax authorities on schedule;

(3) using non-tax-controlled electronic equipment to issue invoices, failing to report the software program description data used by non-tax-controlled electronic equipment to the competent tax authorities for the record, or failing to save and submit the invoice data in accordance with regulations;

(four) the use of invoices;

(5) Expanding the scope of use of invoices;

(6) Substituting other vouchers for invoices;

(7) Invoicing across specified areas;

(8) Failing to pay the cancellation invoices in accordance with the provisions;

(9) Failing to store and keep invoices in accordance with regulations.