Here’s an idea:

1. I receive an unwanted sales call on my phone.
2. I open an app, which picks up the call.
3. The app then connects the call to another, simultaneous unwanted sales call received by some other random user of the app.
4. Both I and the other user are then disconnected from our respective calls.
5. The callers are then disconnected from the app and left talking to one another in some black hole of endless, unproductive spam calls.

How do we make this happen?