If a card is lost or stolen, dial the toll free number given on the or range in your back of the actual materials.
You can either throw it away, or reload it far more money. The value range of Prepaid Debit Gift Cards is from $25 - $500, while other credit providers allow amounts up to $2999. https://groups.google.com/g/giftcard-mall-my-gift-info/c/lJb4jNQqwjY