In Need Of My Wheelchair Fixed

Hello world, Firstly THANKYOU for taking the time to read this. I don't normally do this sort if thing, But I am at my rock bottom. I am riddled with chronic osteoarthritis from my neck down to my feet, damaged nerves, fibromyalgia and other health issues. Have been most of my life, and due to domestic violence 8yrs ago I've needed walking aides and the past almost 2yrs needed my chair due to a lot of constant falls. I also had a major fall the other morning it doesn't take much for me, I've had to cancel appointments as my electric wheelchair is in desperate need of fixing ASAP, it gets me to the corner store and home barely, but it has been leaking transmission fluid a lot and making weird noises and I'm scared its going to break when I'm on the road and I have literally no one to call if that happens. I have zero support, I've tried asking if I can pay it off but they won't allow it, I cannot rent one as its to expensive. Its going to cost me $100 just for them to come and look at it for half an hour of their time and that I can't even do. Its going to cost at least $500 to have it serviced and fixed. I'm housebound for who knows how long because of it. I can use my walker around home barely, but I need my chair for majority. . I'm on a disability pension and have minimal food let alone get my chair fixed. I've been struggling to get in the NDIS, I've done everything they've wanted but they always want more information and its stressing me out as i cant f much more than i have. So I'm reaching out to the world this way. My pain is bad as it is getting worse all the time and my fall has not helped, my arms are worse now issues in my hip, and then add on my anxiety and depression which is in full throttle. I'm almost done. I feel stuck and I'm in a round room looking desperately for a corner to piss in. (Excuse the language just frustrated). Stress just does not help my pain conditions what so ever. I'm just reaching out as I don't know what else to do. Please even just sharing this is helping me. Thank you again reading. Audrey.