Refund product

hello During a customer refund, Woocomerce indicated that the wallet amount cannot be zero or above. The problem is that the client’s portfolio is at zero. And that I cannot refund the -2 euros used by the wallet. Because I would like to refund the product and the amount used by the wallet. But it blocks on the woocomerce refund page. Impossible the customer had paid part with his wallet and the other in credit card. How to do ? Cordially