USBank usbank reliacards Frozen Account Nationwide

Hey!  I purchased an item from Petco online.  I no longer had the animal so I returned the kennel.  The online receipt was hard to read.  It only stated the original price, but I bought it for half that amount.  Petco put on my card the original price.  I corrected them.  They didn't know how to reverse the transaction.  The manager just let me keep the difference.  USBank froze my account over it.  I called to get it straightened out.  They said I would have to send the refund receipt which I did.  Then they wanted the original receipt, but said that it was the wrong one.  I explained to them what happened and gave them everything from Petco that I had.  I called and they said everything was taken care of.  I went to the store to buy food, but my card was still frozen.  I called them back and they said I sent them the wrong receipt.  USBank is keeping my account frozen because the refund doesn't match the amount taken off from the purchase.  I even had Petco's manager call and send them everything but they won't let it go.  Everytime I receive child support until the agency has time to change it to a different bank it will go on this card.  I won't be able to touch it.  I told USBank just to take it off and I will just swallow the refund.  They refuse, but they don't mind accepting my son's money.