The reason I didn't get kept on was because there where more first officer's waiting to start the LT and they had no vacancy for me.
The 'eureka' moment! Your predicament is unfortunate but an entirely predictable consequence of the risks that you took.
'I was just told that....' A top tip for dealing with flying schools, airlines, agencies, and in fact for life in general is: beware of taking advice from those who stand to profit from your decisions.
I'm not sure whether you're genuine and naive or trolling but if it spreads the word to other potential suckers, the replies are not entirely wasted. You're best bet would be to try to work up from the bottom: try your luck in Maun, instruct at a flying club etc. None of these routes offer guarantees but at the moment you have nothing. Very, very few people go direct from training into a
paid jet job. The rest of us found our own routes to reach that point.