A TAXI driver who raped his female passenger last weekend should have been banned from driving cabs five months ago, but was allowed to keep driving. The Sunday Times can reveal a 34-year-old woman was subjected to the horrific sex attack following a breakdown in communications between WA Police and the Department of Transport. The department admitted it would have immediately suspended the taxi licence of Sumudu Rangana Bamunu Arachchige, 28, in February when he was charged with stabbing a man twice with a kitchen knife, but claims police did not notify them of that until Monday. ... The bungle...