Ordinary invoices are also handwritten, not necessarily machine-printed or authentic. If you don't need reimbursement, it seems useless for consumers to ask for invoices, but as long as you ask for invoices and ask for real and effective invoices, the other party can't avoid paying taxes and will also contribute to the management of national tax sources. He doesn't want to pay taxes until he gives you an invoice. You were right to ask him for the invoice, and you didn't have to pay for it.