If you are an operator and need to apply for an invoice from the tax authorities, and the competent tax authorities say so, then the responsibility lies with the tax authorities, and you can complain to the tax authorities at the next higher level. Because according to the provisions of the Measures for the Administration of Invoices, taxpayers are qualified to apply for ordinary invoices as long as they have gone through the tax registration. As long as the operator applies to the tax authorities, the tax authorities are obliged to provide it. Of course, if the application is for machine invoicing, the tax authorities need to verify whether the hardware (computer, printer and safe for keeping invoices, etc.) of their network invoicing is specific. After the hardware is specific, they cannot refuse to provide it for other reasons.
If you, a consumer, ask the operator to issue an invoice for consumption here, and the operator said this, then the responsibility lies with the operator. You can ask the operator to write a written certificate that can't provide an invoice, and use it as evidence to report it to the tax authorities, which will investigate it.