Leon1983, as you've just found out there's a huge difference in "paying for 500 hours" and getting a job.
You may have added 500 hours to your logbook but is it viewed as experience by other operators? Obviously not.
BTW - why won't the company whom you bought the 500 hours from employ you? When you've answered that, then you may have some insight into your predicament.
How did I get to the left seat of a jet? By working my way up through many jobs. Note, I said jobs.