In order to solve this problem, you need to consult the local taxation bureau or call the tax service hotline for specific solutions. Under normal circumstances, the tax bureau will ask you to provide relevant proof of purchase invoice and identification materials, and you may need to go to the tax bureau to go through relevant procedures, such as filling out a declaration form. After completing the relevant procedures, the tax bureau will review and confirm your purchase invoice, so that you can finally get the invoice smoothly.