Product: Credit card or prepaid card

on or about XX/XX/XXXX and XXXX XXXX. There were two ads on XXXX  for a storage shed and a patio set. I placed the orders. the orders went through XXXX XXXX. As i have not used XXXX XXXX in a very long time. XXXX XXXX  had me log on as a guest. I never received any order confirmation from either XXXX XXXX or the merchant. So, when my credit card statement came I called my credit card company to report the charge as fraudulent. Chase bank initially reversed the charges pending investigation. Chase then many months later put the charges back on my bill. Every time I called chase bank. I was told it was under investigation. then I was told that the charges were considered valid. Trying to get this resolved has been a night mare. when I reported the charge as fraud, i had my card cancelled and reissued to prevent more fraudulent charges from occurring. This step made it difficult to get information from XXXX XXXX as i logged in as a guest and used a card no longer in my possession. chase contacted XXXX XXXX and XXXX XXXX got tracking numbers from the sellers. When you enter the tracking numbers into the usps website, the web site says that the items was dellivered to mail box at XXXX Utah. this is the town where I live. When I contacted the Usps, they told me that the tracking numbers were for items that were not delivered to my address. Both XXXX  XXXX and chase bank are demanding I get documentation from the usps on letter head stating that the tracking number was not delivered to my home address. The usps does not offer things in writing. So I an unable to provide what is being demanded. The usps will happily verify this by phone but both XXXX XXXX  and chase bank refuse to make this phone call. As I never received any order confirmation from the sellers or XXXX XXXX, I have not had any contact information for these sellers. So I have been unable to contact them regarding these purchase. The information provided on my credit card statement was only contact information for XXXX XXXX. When i called XXXX XXXX, they could not find any information regarding these purchases, as i apparently logged in as a guest. I didn't remember doing this. So it made things even more confusing. The usps stated that both of these items would have been too large to have been delivered by the usps because they only deliver items up to 70lbs. The shippers declared that the items associated with these tracking numbers were 6oz and 17 lbs. neither of these purchases would have been the weight of either of the tracking numbers. on XX/XX/XXXX, I contacted XXXX XXXX to see if they could give me contact information on either of the sellers. I had to provide them with the old credit card number and they were able to find my record that way. I hadn't done this prior as it did not occur to me. one of the sellers had a California phone number. when i called it, it was not a business and the person on the other end of the phone abruptly hung up on me. when i called back the phone went to voicemail. I left a message but have not hear back. The name of the person associated with this seller that XXXX XXXX gave me when you XXXX that name, an XXXX listing comes up as a deceased person. The other seller the XXXX XXXX person was unable to give me a name as the name was in XXXX. the phone number is also in XXXX. I sent an email to both of the email address that were provided to me by XXXX XXXX. I have not received any response. Everywhere I turn, the evidence is fraud. I am in shock that I am unable to get Chase back to reverse these charges. I do not understand how chase back can call these charges valid. They have been horrible to me. you can't talk to the same person when you call, and no one is willing to help me. Please help me. what are my options?