Have you paid for these items? Has the payment successfully gone through ? You would receive an eBay message to say so.
If you have just bought these items, then the seller may well have not posted them yet, hence no message.
That they are not replying to you, some are just bad communicators.
Read eBay's MBG policy in case you need to make a case for a refund later.
https://pages.ebay.co.uk/ebay-money-back-guarantee/
@kkat2406
