The receipt for buying a car is missing.

As you said, the responsibility lies with the other party. The replacement fee shall be paid by the other party.

There's something wrong with this. Just to be clear. If an invoice has been issued, it is usually in triplicate or more. You can ask to see their stubs to prove whether they have been sent. I have to go again. There will be a lot of trouble without the receipt.

If it's really lost, you didn't sign for it, and they lost it. If they don't open it, they are suspected of tax evasion.