U.S. Bancorp Prepaid Card Complaint

U.S. Bancorp Prepaid card department,

Gift or merchant card Unauthorized transactions/trans. issues Colorado

I purchased - pre-paid Visa cards at - at - - grocery store for the total of $1000.00 for my family as gifts each card totaled $250.00, i have had numerous calls to Visa who knows the cards were compromised and where, i have had no help from them on this issue!!, I filed an - - dispute for $250.00 on - of the pre-paid cards and won, leaving a balance of $750.00 they owe me, they sent me a replacement card with a balance of $55.00 on it? ( still owe me $190.00 on that - ) then my sister was able to use hers for $110.00 until it was compromised and a thief stole the rest of the funds, she was told that she won that dispute but they did not send a replacement card or any way to get the funds back, they owe me $570.00 plus fax and other expenses thru this process, they expect me to be able to reach an associate at their phone # - ( - ) - never returning my calls ( even though i 've faxed all per tenant information and included all info they request on the answering service ), it has been a total nightmare and their hiding behind the veil of a large corporation that offers NO help or resolution to this issue, i have a paper trail and all receipts pertaining to this transaction and have had NO help, i 've called numerous people and have NO resolution.