My son was expelled from school

Good morning my name is Nhlanhla Sibisi and my son's name is Owethu Mahlangu. On the 1st of August I received a call from the school that my son was expelled by his principal. They expelled him because the principal said she was ***ual abusing a girl were by when he explained to me they were playing and myb son hugged the girl from behind. On the second of August I had an accident so I was unable go attend to my son's matter. I eventually went on the 3rd which was the following day. When I was there they told me that the principle won't be able to see me because she has a meeting with the grade 12 learners, so no one assisted me and I was sent home. So the principle saw that and she took my son's books and call me.when I went to the school for the second time , I got the deputy principal and he told me the principal is unavailable as she lost her mother so she went to Capetown and lock her office. It's been 2 weeks my son doesn't have his books. When he expelled my son it was around lunch brake and the scary part is what if my son decided to do something stupid to himself because of what he is accused off.the most hurtful part is this is happening for the second time. He doesn't communicate with us as parents because eldos is not safe 1st and for most. The deputy principle took my numbers and said he will call me till today I haven't received any communication for him. This school is so *********** and the principal is very ******. Hello Peter I need your assistance because really this is affecting my son because he can't do his school work.. Thanks