Cheap laptop bought and other items get. What can you do?

Hi
3

Someone bought a laptop for his girlfriend from a trustworthy online shop and paid for it. This was very cheap from the price. He has now received a package and there's said laptop is not included but another article he does not want. The laptop is no longer available in this shop and everywhere else costs much more. What can you do?

Ja

As with any other wrong shipping once the seller write and then possibly send back and exchange.

Hi

If he had already done that and no answer came back? How long should one give opportunity to answer. And if the dealer contacts you and only wants a refund. But this is desired by the buyer? Since he does not get the purchased item anywhere cheaper

Ja

You do not have to write in the subjunctive.
One waits 1-3 days for an answer.
It allows a refund of the purchase price and the buyer wants that too? Win-win situation.