Product: Checking or savings account

I was the victim of a crime of theft. I purchased what was sold to me as a game worn jersey. Online from XXXX XXXX. I received the item and it looked like a counterfeit and not what I was expecting to purchase or what it sold as. I posted the item online and received and out pouring of responses from reputable individuals in the industry all saying the item was fake. I called XXXX XXXX about my concerns regarding my purchase and the items validity. The owner XXXX XXXX, immediately starts going off getting defensive saying he doesnt XXXX XXXXXXXX XXXX XXXX XXXX XXXX online. The item is real he authenticated it in-house himself. I asked him to please show me some proof of its authenticity? Or how he reached that conclusion that its game worn in his research of the item. He didnt respond or produce anything. Instead he got more agitated. So, that led me to not believe him. And I asked him at that point for a full refund and to return the item. He attempted to deny me. Returning the item. After several minutes of back and forth verbal exchanges. He agreed that of I had the item authenticated by a third party and it was proven to be as I claimed fake. He would look at the authentication and let me return the item for a full refund. So, I went and had the item authenticated. By a well known industry leader and authenticator of game worn/used memorabilia and he determined for multiple reasons the item was fake. And gave me a signed document stamped with pictures of the item and reasons listed. I took this to XXXX and also returned the item in XXXX. XXXX was supposedly processing a refund for me all of XXXX I never received it. I then called Chase informed them of the situation and they opened an investigation. The filed a police report for fraud theft as well. Sent Chase the police report statements from reputable individuals in the hobby online all saying its fake. As well as a copy of the authentication that states the item was fake. Fast forward Chase finishes their investigation determines I was right and I win a refund of a total of {$6600.00} charged to my Chase debit card back. However, Chase told me that they changed their policy and have limited refund rights or wont go after the {$8800.00} that was charged to my Chase checking account leaving me in the hole almost $ XXXX as a consumer. I never knew of these changes and how I wasnt protected as their customer of over XXXX. I wouldve never used my Chase checking account ever for payments to any business if I had been knowledgeable about not being protected at all. I assumed Chase debit card and checking account transactions were the same since a debit card is just a piece of plastic attached to your checking acct. Chase has left me in the negative because of their failure to protect me or pursue the full refund of all my funds. Knowing I was the victim of a crime. So, this individual XXXX XXXX, the owner of XXXX XXXX has been unresponsive and dodging me even after admitting several times via email he owes me {$13000.00} still Chase has failed to protect me as a consumer and customer of the bank. Im asking that they refund me the {$8800.00} I rightfully owed from XXXX XXXX  or from the bank directly here.