Contact that vendor on the phone and email him/her the photos of this orchid. Do it right away. They need to replace this plant. You will probably be able to keep this one as well, but they may request you send it back. Either way, you need a new - healthy - plant. Any vendor worth doing business with will replace this instantly - especially if it was overnighted.

No vendor who wants repeat business would ship you a plant in that condition. Please keep it away from your other orchids in the event that it is also infected with pests.

Just my 2 cents....

As for caring for this one. If the vendor doesn't want it back, remove all potting medium from its roots. Remove the lower big leaf with the most damage. Check for spider mites under the leaves (the pitted holes on the leaves could be spider mite damage or cell collapse from cold.) If you find mites, use rubbing alcohol and a paper towel and clean the leaves, top and bottom very well.

Next, if the roots are good, you can repot in your choice of medium. If the roots are very damaged, post a photo and let us take a look for recommendations.

good luck with this one. Mini Mark is such a beautiful phal.

cheers,
BD