​I have a small online business selling socks. I just got a notice from Stripe that a customer filed a dispute claiming the charge to their cc was “fraudulent.” Should I reach out the the customer?

I see through tracking that the package arrived safely. And I googled the address and the house is owned by a family with the customer’s last name. Also the IP address is for the exact area I shipped to. There is no information in the dispute to help understand what or why they are disputing the charge. It just says “fraudulent.” It was a relatively moderate charge ($78) but I feel like I have very little chance of winning the dispute. This doesn’t feel fair. I was wondering if I should reach out to the customer? Email? Phone!? Does anyone have best practices for this? Thank you for your help and thoughts! (PS I am in Canada and I shipped the product to the USA, Colorado to be precise.)