I received a chargeback from a customer last week saying that they didn't receive their order so they wanted a refund. I submitted evidence that the package was still in the mail and getting there in two days (on time nothing was delayed). The next day, I was charged for their order and charged a fee from the bank of $15. That same day, their package arrived on time. I lost all of that money and I am scared that it will happen again. How do I stop these fraud orders. (It was a low risk order too!!)
I've written an article that helps you identify orders that might look like fraud. https://medium.com/@jason_80572/five-things-you-can-look-at-to-prevent-fraud-orders-from-happening-t...
You can also read Shopify's article on this very subject. https://help.shopify.com/en/manual/payments/fraud-prevention
When a customer requests a refund, you should let them know that you are happy to offer them a refund, but only until the package is returned to you. This can help minimize the chance a customer will open up a chargeback case.
I hope this helps.