Every month, thousands of economic migrants flee Zimbabwe and cross the border into South Africa in search of a better life. However, many become victims of rapists and robbers waiting on the border. Medical workers say they have seen an average of 15 abused women and girls a week since the beginning of the year. With most cases going unreported due to fear, it is impossible to know the exact number. But with unemployment in Zimbabwe at 90 per cent, desperation will keep driving people to make the journey, no matter how treacherous it may be. Al Jazeera's Haru Mutasa reports from the town of Musina in South Africa.