WHAT IS WRONG WITH TEACHERS TODAY ?

my 7 year old son is being bullied, after promising to solve the problem last year, and keep an eye on my son and the 3 boy bullies it's happening again, i told the head and all i felt that she was in a hurry so the next day i phoned and made sure she herd me out the last incident that happened to my son was when the 3 boys built a see saw with a school bench and a box they then held my son with one end of the bench between his legs while one of the boys was ready to jump on it they told my son they were going to crush his nut's my son was terrified. i told the school this and that i have brought my son up not to retaliate back but to tell a grown up which he has tried to do only to be told " o " go away and stop telling tails when i told the head this she just said no member of my staff would say that ha! what a joke considering 2 members of staff have said this but they wouldn't tell lies only children tell lies i get letter from school saying report bullies don't put up with it tell a grown up ha-ha! what a load of bull if teachers did listen then maybe there wouldn't be half as much bulling at this school they let 5 year olds get off the school bus unattended and wait 5-10 before a teacher opens the door i didn't think this was allowed all it would take is a min for pedophiles to take a child but teachers are so caring aren't they ha ha what a load of bull