usps strikes again

I just got this :

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Dear customer

Thank you for taking the time to notify us of your experience. Your USPS® Service Request 37067847 has been marked as resolved.

We are unable to track your package due to no active scan since 3/8. We request you contact the sender and inform them of non receipt for final resolution.

Please accept our sincerest apology for any trouble this may have caused you. We appreciate your business and look forward to serving you again in the future.
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The package was shipped to my old street address and then forwarded to my po box. They lost it when they forwarded it from one post office to another post office literally down the street and their solution is for me to tell the shipper to send it again. The lost tracking on it because they cover the tacking codes on the package when they forward it, but they don't give it a new tracking number, just delete the old one. So they lost it.