tuition fees for college/university (Victoria way,Africa zambia)

I'm in school in Africa,Zambia and I live with my grandparents,and I do not have enough money to pay for the next semester,and years for school and I'm on a 50% scholarship,I don't know how I can raise the other 50% the total tuition fee is £500 per semester,the whole course will Cost for 31/2 years is £3500 ,your Contribution will be highly appreciated