Got a stamped postcard in the mail labeled “Parcel Tracking Notice” that says “THIS OFFICE IS ATTEMPTING TO REACH YOU.” The postcard claims I need to call this number “arrange for delivery”. When you call, they ask for the parcel number immediately upon answering and try to get you to pay a delivery or storage fee in exchange for this mystery “parcel”. It's not an actual package, and they're not a postal carrier—it's a scam, plain and simple.
A real delivery service would have company logo on the postcard at the very least. This one does not. A real delivery service would not need to put a stamp on it and mail it. Clearly BS. There's no telling how many spammers they will sell your phone number to if you call them.