The purchase date, estimated delivery date, COVID-19 pandemic, and the buyer's inconsiderate and harsh feedback, send a big red 'Jerk' flag up for me.
However...
I have had a couple of buyers mistakenly scream at me rather than the seller they actually purchased an item from.
I've also had a a couple of drunk or stoned buyers screaming and threatening for their order the same or next day after purchase.
I've even had a PO'd seller mistakenly rag on me in feedback for an item I'd purchased and had left awesome feedback. Oops, wrong buyer.
I'd contact eBay.
I would hope they'd oblige you with a removal.
