You have Simple Delivery tracking on your listings, it's a shame you didn't use it.   eBay only ever go by postal tracking.    Their thinking is buyers can muddle different sellers and different transactions so won't necessarily take messages or feedback into account.

You can try contacting eBay in the morning to see what they say.   You can request a callback on here:
https://www.ebay.co.uk/help/eua?id=5190

If you want to involve the police you'd have to do that to get any more info out of eBay.