So I escalated with eBay yesterday (item not received), haven't heard from eBay yet (apart from the acknowledgement), but today I receive a couple messages from the seller's "other" account, which I'll copy paste. Nothing by the way from the actual account I bought the watch from.

Messages as follows:

"I have had a complaint from eBay saying I haven't posted the item I presume you mean my watch which you said you weren't going to buy from me so that is the reason I haven't posted it please get in touch with me direct I'm going to take it off eBay for sale if you still want it deal with me direct but you did say you weren't going to buy it from me so that's the reason I haven't posted it please confirm these details by counting contacting me direct on here"

And:

At the end of the day you said you weren't going to buy from me so that's the reason I haven't posted it and I haven't had any payment if you still want it then I suggest you get in touch with me"

I honestly can't comprehend how they clearly are receiving all the messages from eBay but choosing to ignore the fact that I legitimately purchased the watch and now blaming me as well