By Jonathan Blackburn & Tim Hanlon A mum has claimed a tax driver “shouted abuse” and ran after her 11-year-old son who fell in a ditch and broke his arm. Leah Pond says Alfie collided with the taxi on his bike and was then chased along Pound Gardens, in Norton, Stoke. The youngster is then alleged to have fallen off his bike and into a ditch sustaining the broken arm that has required surgery as well cuts and bruises. A Staffordshire Police statement said that the boy collided with the back of the taxi that was stationery although Leah and a witness have claimed that the taxi was reversing du…