I can understand you feeling as you do. Sounds as though you had not told the finance company the whole truth though. So what are your options now? Several deals have come to nothing and so quite clearly your circumstances are not straight forward. How much longer do you have on the current RCZ contract and do you have a "to buy option" and if so, is this an option? Will time change your circumstances in the eyes of the financing companies eyes as you are now working? If in any doubt as to your acceptability in their eyes, personally I wouldn't be looking at new cars and building up my hopes and desires only to be left feeling as you do right now. Obviously I do not know exactly what has occurred but from reading your posts it does seem that you sign on the line and then it falls through, so is it always for the same reason or are you simply unlucky?
I went on a spending spree after a couple of heart attacks, as I believed that I had so much money saved and it was stupid to die and not to have enjoyed some of it. After a second heart operation and still being alive and a bank balance that was no longer as healthy as it had been, I now realise that depreciation on new cars is too much for me to stand. I lost £30K in depreciation over this short period and now I have decided to cut my cloth according to my income and stop delving into the savings to support my desire for new cars.
What I am trying to say Jassy is live within your means, stop striving to keep up an appearance beyond your ability to finance it and life will seem a whole lot fairer.