house of brides House of Brides is keeping my money! I made my transaction online. Nationwide

I felt in love with a dress by Eden and I tried to buy this dress online from House of Brides. They claimed they had my dress and after days of being indesicive, I made the biggest mistake of ordering it from them. I payed my order with my Debit card and the money was withdraw from my account in full within less than 24hrs. However, 2 days later, I received an email from "Joan" from house of brides saying that they did not had my dress and that my order was being canceled. Them my nightmare started 'cause it's been 12 days since that email and I have not been refund. I've tried to call the store and the only time I was able to talk to someone, they guarantee me that my order was canceled and that it was sent to "their refund department". Since then, I haven't been able to contact anyone there because nobody answers the phone or neither have I receive any respond from my emails. I feel robed and that I'm talking to a wall, trying to find a solution for this situation. I tried to contact my bank to see what could I do and maybe dispute this transaction to find out that debit card transactions are "indisputable" because its "cash money" transaction. I'm so mad about this whole story. It's steeling and I don't know what to do about it! I will never recommend this store to anyone and I HOPE TO GOD THAT people search this company before doing any type of transaction with them!