Blackhawk Network Holdings Inc. Prepaid Card Complaint

Blackhawk Network Holdings Inc. Prepaid card department,

General purpose card Unauthorized transactions/trans. issues Pennsylvania

I am trying to dispute a transaction with blackhawk network on a prepaid visa card. I have submitted the dispute form both via fax and email, but have not received any confirmation that the dispute form has been received and is being processed. I have called several times and spoke to several different departments and no one can get me in contact with the dispute team for a status of my dispute. Their terms state they can only accept disputes that are initiated within 60 days from the transaction, but fail to even provide a confirmation of receiving the dispute or the status of the dispute -. I am at wits end and this involves $500.00, which is a lot of money.