How do I sue USAA for a renters policy?

I let my brother in law borrow my washer and dryer. During this time his house burned. I have made his insurance company aware that these items belonged to me and not him. They refuse to help me out and pay for my items. I learned later that he did claim the items as his own and pocketed more than $1000. I... show more I let my brother in law borrow my washer and dryer. During this time his house burned. I have made his insurance company aware that these items belonged to me and not him. They refuse to help me out and pay for my items. I learned later that he did claim the items as his own and pocketed more than $1000. I talked to an insurance person whom suggested that I sue USAA since they knew the items were mine and paid him still. My question is how do I sue them? I dont think I actually need an attorney for such an amount, but not sure what court, who exactly to sue on the court papers etc. I am needing to file this soon, so any help would be greatly appreciated.

Thanks!
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