Aggressive/Abusive Ebay Buyer - Info To Block

Looking out for my fellow honest and trustworthy coin sellers on ebay. Please judge for yourself. Five days after sale, and still a few days before ebay's estimated delivery date, I received the following message from ebay buyer sc3939:

"I'm reaching out in regards to my purchase with you. It's been 4 days since I purchased the coin you had displayed and as far as I can see the coin has yet to even leave California? Can someone explain why? I've made more than several purchases from California and I have had in my hand my product at my home In 5 days. If it is sent like it should be in a timely manner that is. Was my coin even sent yet? Had anything at all been done at this point. I do not wish to contact ebay about this matter. But no problem what so ever in doing so. I do not wish to be refunded or anything such as this. I only want what I've paid for and owed to me period. I've only had a couple situations like this in the past and as a regular honest customer here I know that some try to not send the product because what I paid on auction was less than what the coin value is. I do not know if these people are still sellers on ebay as my longer after pulling this trick and hope they are not. I also hope this is not what is going on now. I hope to hear back from you and the purchased coin is in the mail. But seeing it has no tracking details it's hard for someone on my end to see where it is or if it's even sent. So I'm saying this I will wait on a response but if none is received I will take the next step in the process in obtaining what I have bought and expect. I hope to end this now and not need to move forward in contact ebay snd also warning others of this type of dealing and not be as frustrated as I am with such slow and unnecessary amount of time to recover their products from sellers that they have already paid for and expect yo receive in a timely manner. I'll wait briefly on a possible satisfactory explanation before I proceed any further with this but I will wait much longer."

I responded:
"Good afternoon,
Your coin was purchased at 5:10 am (PDT) on Friday, Mar 31, 2023.
It was packaged in the evening, later that same day, upon my return home from work.
It was handed directly to my USPS delivery carrier the following morning - Saturday, April 1.
It received its first tracking scan that evening at 7:33 pm in Los Angeles.
It was scanned this afternoon, just a short time ago, in Columbus, Ohio and should be delivered to you within ebay's estimated delivery window: Apr 6, 2023 - Apr 10, 2023. Hopefully on the sooner end of that estimate.
Have a great day."

Then today he leaves a nasty, aggressive, and somewhat incoherent negative feedback. I saw it coming - crazy is as crazy does. Also, of the 36 feedbacks he has ever left, 25% have been neutral or negative.

Please do yourselves a favor and block: sc3939