Can one force a company to pay for goods ordered by the director without authority?

It's a tricky question - depending on which country you're in. In the UK, legally - your contract is with the person who placed the order. If you have proof the goods have been delivered - then the person who ordered the goods must either pay for them - or return them in their original packaging.

If the company is refusing to return the goods and refuses to pay for them - technically, that's theft, and you can pursue a criminal case against the company and/or the individual placing the order.

The person who placed the order without the authority of the company would be liable for disciplinary action by their employer.