Hi-Fi Corporations shocking after sales service

I processed a warrantee claim for a Hisense fridge which I purchased at Hi-Fi Corp. Hisense was amazing and quickly processed my claim. The refund was issued to Hi-Fi Corp on 12 Jan and here my troubles started. I phone Hi-Fi Corp and registered the claim and gave them the refund reference number from Hisense and they acknowledged it then no feedback. I phone again to follow up after about a week and the agent tells me my Fridge is on the delivery truck and they will phone me when they are an hour away. I wait for 3 days and nothing. I phone again and say I'm still waiting and then I'm told the fridge is not in stock so they can't replace it and they will phone me. I asked to report the agent who told me it was on the delivery truck as I cancelled all my plans for 3 working days waiting and get told they can't look up the details. More time passes and I phone back still no stock and a promise to be phoned back as I asked to register a formal complaint. I check the website and there is stock online and In stores so I phone back again. The agent tells me still no stock so I ask then why is there stock online. I get told that it's only showing as in stock in case people want to buy it, pay for it and then wait for it like a wishlist. I said thats not proper business practises as the website says In stock not on order and I asked what if like with me it's taken 4 weeks already with no stock and he said then they decide when to refund the customer. I asked to get the lack.of stock for 4 weeks in writing and no feedback. I asked to register another complaint and was promised a call back and nothing. So after 4 weeks Hi-Fi Corp is sitting with my refund, they haven't called me once throughout this entire process and I'm sitting with a fridge that doesn't work which I can't replace as they have my money. I was also told the only channel for complaints is to go through the call centre. In short I will definitely buy a Hisense product but Never again from Hi-Fi Corp