No feedback or communication from HiFi corp

I bought a item from HiFiCorp online, after buying i realized i bought the lesser unit than the one I intended to buy. I then tried contacting them for around 6 hours. Not one reply, no response. I sent approx 12 emails, I am still waiting for a reply on 1. Approx 7 hours later i managed to speak to someone on the web sites "Chat" interface. "Ben" All Ben said was, send a email, I told him i sent and I am still waiting on a response. About a hour later, after complaining on the their Facebook page, a admin informed me that i have to wait 24 hours for a reply. I noted to him that i need acknowledgement from them now as i am cancelling the order and i want a refund. I was told to wait 24 hours. It is now 24 hours plus and I am still waiting on a reply. The only one I received minutes ago was to inform me that the order is ready to be shipped. Is anyone even looking at their emails at HiFi Corp.