High-end-turntables

I also find it helpful to talk with the people I am buying equipment from, on the phone, with a living person. 

The reason credit cards are so safe is that they have contracted with the business to be able to use their cards and it is the responsibility of the credit card company to make sure they are dealing with an established business. If a business does not take credit cards you can assume there is a problem.

If your bank wired funds to Wise, then Wise should be able to find you or have record of your incoming wire. I would lean on Wise more heavily. Good luck, and sorry this happened to you.

Why would you ever wire money for anything? A tell tale sign of a scam.

Requests for payment by wire is maybe THE classic sign of a fraudster.
So sorry that you had to learn this the hard way.