Service bad

Worst service. I bought my 13 kg hisense top loader on 04/04/2022. From the 15 October 2022 I called baywest hi fi store to tell them my hisense 13kg top loader is not working. They took my receipt number and said they will book in for repairs and it will take 7 days. Even after 7 days I called and to no help. I decided to email hifi Corp last week and still no help they only asked for details till today. Then I went there with washing machine for either an exchange or refund as they are failing me. The manager said not possible and had an attitude and that he doesn't care, left me and went to the back. of which I left it there too as I will not be going home with machine that is not working. and I also told him I don't care either what policies must be followed if he is unable to manage his store, because those ladies I have been speaking too only logged in my booking 31 October. So that manager is making his store problem my problem of which I want a working washing machine. I have an 11 year old with Cerebral Palsy that depends on me with everything as she is unable to do anything for herself and has epilepsy of which I have to always keep my eyes on her. I am still sitting without a washing machine and have to do my laundry by hands under those circumstances and I bought the washing machine for that. Today I also called call center they say they are still waiting for someone to repair the washing machine of which they don't know when it will be repaired. Please help me get my refund since they cannot get the washing machine in time or even replace it. I just need my money at this moment