I've sold and sent phone but the buyer hasn’t paid or contacted me. Can Apple render the handset useless?

This is my first post. I’m appealing for urgent help. I recently changed my iPhone from an 8 to an SE with my provider. The shop wouldn’t take my 8 as part exchange so I sold it on a website called Depop For £280 to someone I thought was genuine using an app called cashapp. I stupidly sent the iPhone 8 thinking they’d paid me however after research the Florida address is associated with scams and the buyer hasn’t paid me or contacted me back. All I have is their email and a postal address. I took a picture of the box with the serial number and I’m with number. I’m hoping someone can tell me if Apple can render the handset useless by putting a freeze on either of the numbers?

​[Re-Titled by Moderator]