Declining my case

Description

I bought an item off eBay via credit card which went through PayPal web. So I’m assuming that’s a guest transaction. That’s ok. However, once I sent the payment over to the merchant, the merchant came to tell me that he had already sold this item to someone else and he would proceed with the refund. That’s ok, because the refund process was just to credit back. Not long after many reminders days after days, I received a package from my courier that stated that the merchant had sent the item over. However the item wasn’t even the one the merchant listed. And thats when it became not ok. I told him it was his error sending- 1: The item because he told me he couldn’t send it to me because it was sold and we agree to a refund. 2: The item he sent wasn’t even the one he listed on eBay. I contacted PayPal and here’s how it went. PayPal request for a tracking number and the returning package and all. Look, I didn’t even bother to open the content inside because I can see through the plastic other than opening the packaging from the postage. I sent it back nicely wrapped and neat and submitted PayPal the tracking number and all. Item reached back to merchant’s address. Next day PayPal came to tell me case has been denied, reason was because I didn’t give details after their certain amount of days. Now due to the Covid19 virus transmitted globally resulting in shortage of manpower of PayPal, I am unable reach the customer service hotline here in Singapore. However this case and my writing to PayPal has been long before it was declared a pandemic. I have requested the seller once more to return me my payment plus the postage back politely, but to receive nothing from him, again. Am I really going to lose my 120+USD here due to the seller’s fault?