Why do you always receive electronic invoices when you don't buy things?

Missent or system error, wrong mail subscription.

1. Missent or system error: If the merchant or electronic invoice platform system sends it by mistake, the electronic invoice will be sent to users who have not purchased goods or services.

2. Email subscription error: I subscribed to the email service of a merchant or platform unintentionally, and the email service of a merchant or platform sent an email containing an electronic invoice.