Content Unavailable - This type of content is not currently compatible with your device. To play, try again using an Apple device.

All devices that are listed as officially supporting the Apple TV app, should be able to play any of the content as purchased from the iTunes Store on your Apple ID account. What is your model smart TV?

List of Apple TV app-supported smart TVs and third party streaming devices - Apple

I tried contacting Apple but they were no help.

How so? They should be able to help diagnose why it doesn’t work, and tell what can be done about it.

Philips 48OLED806

That seems like a very nice TV. Philips TVs with Android TV operating system v8 or later should be supported for downloading and using the Apple TV app on there.

Apple TV app - Play Store preview for Android TV - Google

Please verify that the TV system software is up-to-date.

Please verify that the app is up-to-date. Delete and reinstall when in doubt.

Note that this TV is not AirPlay-enabled, so you can’t stream Apple content to it wirelessly from another device. You have to use the app on the smart TV, or on a TV-connected streaming device.

I’m sorry to hear they misunderstood you. Please try contacting Support again. Hopefully you’ll get a different staff member. If you feel misunderstood and can’t explain it better, then do ask for a supervisor or different expert knowledgable on this topic of iTunes Store movies.

If they can’t offer a working solution, then you may ask for a refund. Request a refund for apps or content that you bought from Apple - Apple Support.