WHEN Zimbabwean mother-of-four Eunice Sinoya enrolled in a first aid course near the capital Harare she was lured by the college's promise of a job in Britain's care sector. But more than a year on, she is sitting at home with her dream in tatters, the victim of a fraud that has cost her thousands of dollars. She is not alone. Police in Zimbabwe are investigating reports of dozens of scams that have exploited booming demand for basic healthcare qualifications, which are increasingly seen as a ticket to jobs overseas. Sinoya, 45, said she sold family land to pay for bogus…