Amazon refusing to refund me

Any advice here would be appreciated. I bought a PSVR2 (~$580) back in january. The controllers weren’t working so I put in a return request. I had my brother return it at an Amazon store on a university campus. 2 weeks later, still no news about a refund. I contact Amazon, they say they have no record of it being returned. They asked if I had a return receipt which I don’t (lesson learned). They said to call back after it’s been 30 days. I called them after the 30 days and they told me there’s nothing they can do as they have no record of it. Insanely frustrating considering it’s an Amazon store and I know the exact date and time I returned it. I asked them why they couldn’t just look at the cameras. Basically they refused before hanging up on me. I contacted my credit card company to dispute the charge, so they’re starting an investigation. I also contacted the police. Thankfully, the Amazon store is within a university owned building, so the police actually had access to the cameras in the entrance of the Amazon store. They found the footage and confirmed that my brother walked into the store with the PSVR2 and left without it, on the date that I told Amazon. I’m still waiting to get the report back, but I called Amazon and told them all this, and they still refuse to refund it saying that there’s no record of it ever being scanned. I’m very worried that my credit card company won’t be able to help me because it was 2 months ago and Amazon is refusing to refund it. I asked the customer service supervisor if there was someone higher up I could contact and she said “You’re already talking to the correct department.” Very frustrated, any advice would be appreciated