How to cancel an iPhone's Trade In?

I understand you've lost the iPhone you wanted to trade in, so you want to cancel the trade in

• Can I cancel a trade-in?
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• If you haven’t dropped off or shipped your device yet, you can cancel your trade-in by simply keeping your device.
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• If you’ve already sent us your device, the trade-in can’t be cancelled. However, if you receive a lower revised trade-in value after we inspect your device, you can choose to reject it.
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• If you buy a new device online with a trade-in and return the new device, your trade-in will be cancelled automatically and we’ll return your trade-in device.

Apple Trade In - Apple

I am not sure what you are saying. You lost your phone. What don’t you want anymore?