Anyone out there a nurse?

I received a really odd package today, six weeks after it had been sent.

It has my name and address on it that I use for shipping from my Amazon Wishlist, which is my first two initials and my last name. It was sent from an Amazon Marketplace seller. I tried to find the username but couldn't.

I did not have the Nurse's Med Deck + Resource Kit with CD-ROM on my wishlist! But somehow it wound up in my mailbox today.

It's not listed in My Orders. I do have an order ID, but plugging that in does nothing.

Anyone ever experience this before? There's even a tracking number on here that when I look it up says that it was due to be delivered on October 6. WTF?

I certainly don't want to have to pay to ship this box of cards back to whoever sent it. There's no name on the package, just address. Anyone know anyone from El Dorado Hills, CA? They didn't even put the full "El Dorado Hills" on here, just EOH for crying out loud. Their house is nice though, based on Google Streetview. :/

What should I do? Call Amazon and give them the order number and see who it actually belongs to? I hate to have someone not get what they paid for, but I don't want to go out of my way to get to the post office and pay to ship it back and never see that money again! Anyone ever deal with Marketplace sellers and not receive an item they paid for?

The thing I don't understand is that this is obviously my Wishlist address.

Shit, I wish they had sent me like a TV or video games by mistake instead.

ETA I called Amazon, because the buyer's name is on here and I'd feel terrible if I ordered something and it simply disappeared into the ether. According to Amazon, the item was marked as lost, so the buyer got her money back. They were ready to give me a label to send the thing back to Amazon, but since it's from a Marketplace seller they couldn't do that.

How the seller shipped to my address is still a mystery.

Hey Patricia G., next time buy me something better!

Anyone need a box of flashcards with medications on them for nurses?