<prompt> Human: I was considering posting this on rlegaladvice but I thought this might be a better fit.On May 20th I purchased a webcam from an eBay seller. It was shipped USPS. On May 24th it was marked as delivered. No package at home, found some people online claiming this isnt super uncommon and it could show up in the next few days, as it might had been accidentally scanned. But it didnt.On May 26th or 27th, cant recall which, I went to my local post office and explained the situation. My information was taken, including the tracking number, address, and my phone number. I was assured itd be looked into.After never receiving any calls or the package, I returned to the post office on June 2nd. This time the person I spoke to was a little more helpful and was able to confirm to me that the package was delivered to the wrong address. According to him, they delivered it to 139 - I live at 131. He told me that they would have the carrier attempt to retrieve the package and deliver it to my house. I was told I would be contacted with more information.After again not receiving any calls, I returned on June 7th. The post office supervisor informed me that they were unable to retrieve the package, again admitting that it had been delivered to the incorrect house.I contacted the eBay seller for the first time - as I was hoping to work it out with USPS - on the same day, June 7th. I explained the entire situation to them and politely asked that, if possible, they could send another webcam or refund me the cost as I never received it.They replied giving me too options. They said, and I quote: Hello, We are sorry to hear that. Since we shipped your order to the address that was provided to us, we should be free from the responsiblity sic for this loss. But we would like to share the loss with you. We could refund half of your payment or send another one if you would pay the half of your original payment. Thank you for your understanding in this matter.They claim that because they shipped to the correct address, they are not responsible for this issue. They try to make it sound gracious that they are offering me half refund. I do not want to sound ungrateful, but my limited understanding of the law seems to tell me that I am entitled to a full refund.eBays money back guarantee - which this purchase was covered by - indicates that eBay will ensure I receive a full refund if I do not receive an item I ordered. However, if for some reason eBay is unwilling to issue one, the Fair Credit Billing Act states that I am entitled to a chargeback of funds for goods and services you didnt accept or that werent delivered as agreed. My question primarily is, does USPS mistake constitute as werent delivered as agreed? The eBay seller, eBay itself, and my credit card company are all capable of contacting USPS and confirming that it was delivered to the incorrect address and that I never received the package.Any other advice, such as how to respond to the sellers offer, is greatly appreciated. I really want to be solid on if Im entitled to a chargeback before I reply to the seller and decide to accept or counteroffer.Cheers,Frustrated customeredit, spellingAssistant: Have you actually gone over to number 139 yourself, and asked them about the webcam that was supposed to be delivered to you? Or is your neighborhood so bad, that you cannot do that safely?Human: No, I have not. Its not a bad neighbourhood but I would not necessarily be comfortable doing this. The post office supervisor informed me the carrier was unable to contact the household and was, quote, unable to retrieve the package.When I asked if I could get written evidence that they delivered to the incorrect address, she told me they dont normally do that. She said that as long as I keep the tracking number handy, any post office should be able to look it up and confirm it was delivered incorrectly.  <response>: informed me the carrier was unable to contact the household and was, quote, unable to retrieve the package.Thats code for the carrier didnt feel like doing it, if I even got around to mentioning it. 