I have evidence of a global corporation "seemingly" defrauding their gift card users when cards are used to pay for items. Please help!

When 2 or more of this co.s gift cards are used to pay for items, this co. will purposely scramble, mix-up & re-shuffle all or a portion of the available credit shown on the card, & which cards had what funds used (applied) toward the purchase(s). This reshuffling of the available credit left on the cards presented for payment, in their remaining balances sure seems like outright, slight of hand, theft. Unless the card is completely used, (drained entirely), the unsuspecting card holder/redeemer will be mislead to believe that a card may have no remaining balance, when it does. What's shown early on to the person during the redemption, later changes due to the reshuffing, The co of course keeps these reshuffled, manipulated & unused funds. Additionally, it's gone so far as to make it impossible to track where, when, how & in what amount(s) were used per ea. gift card so they've basically eliminated any trail or proof of the cards usage.