** Lives at risk as children use payphones to make hoax 999 calls ** Children making hoax 999 calls from payphones are risking lives, say concerned senior officers from Cleveland Police. 999 operators have received over one hundred hoax emergency calls since the start of the school holidays from telephone kiosks in Middlesbrough, Redcar and Cleveland, Stockton and Hartlepool. Just one hoax call can cost a life, as it could stop a real emergency getting through to police. 24 calls were made from