KIM HARRISBERG AS downpours swamped South Africa's third-largest city this week, residents lucky enough to still have internet access and power shared harrowing videos of highways turned into rivers, collapsed buildings and flood-capsized cars. The deluge has killed more than 300 people in KwaZulu-Natal province, and with more heavy rain expected on the weekend residents and experts questioned whether the city had prepared sufficiently for worsening weather extremes. "We don't have the government's attention," complained Siya Gumede, 26, outside his home in Shakaskraal township north of Durban - a home now with only walls after a neighbouring church collapsed onto…