JPMorgan Chase & Co. Bank Account Or Service Complaint

JPMorgan Chase & Co. Bank account or service department,

Checking account Using a debit or ATM card Illinois

On - -, 2016, a criminal hacked my account and charged $790.00 to my checking account. I immediately noticed that same day because it put my account in the negative and I got an alert stating that I was in the negative. So, I immediately called Chase Bank and made them aware of the fraudulent activity. They told me to stay calm and that they were going to open a claim for me and that everything was going to be fine. They credited back the $790.00 to my account and told me they were going to investigate. I followed up with them the next day once I saw that they let the charge go through on my account. It was only pending the previous day and I did n't understand why they would n't red flag that transaction and reach out to - right away, but they told me this was apart of the process so I just waited. I called back over the next to two months for updates and was told nothing. Every time I called they would tell me there was nothing in the notes, so they could n't tell me the status of the investigation. All of a sudden, tonight around - on - - I get an email saying that they finished the investigation and the charges are correct and they 're taking back the money they credited back to my account. I do n't understand what happened here. Literally, they let someone steal almost $800.00 out of my account and did n't even fully investigate because I never made those charges. It 's not even like me to make charges that big. Why could n't they just look up where the stuff was delivered to and catch whoever did this to me. I just got screwed by - and my own bank. I do n't know what to do. Please help.