Oh, Marina, I am SO sorry you've had to endure such a terrible expense and experience! Thank you for warning us all; it's very kind and helpful of you. I've never bought from that company, but was tempted many times. I too think maybe PayPal will be able to help you resolve the issue in some fashion; possibly involving your credit card or bank too. Covid has been a nightmare around the world. I can not imagine trying to be an international dealer in gems and pearls during all this time. Certainly, everything he said could well be true, that he got stuck while traveling and dealing in the exotic and special pearls, even if his office still carries on some "ordinary" business without him. However, you should not have to suffer for nearly a year over that, and I hope you get a resolution. Sending you HUGS, friend; we're here for you 24/7 anytime; you are special to us.
I have bought from agustus-collection on ebay many times without problem, but only via ebay. And very recently as well. Have you tried to contact agustus-collection via their ebay page Marina. They usually responds very fast.