Finding things VERY hard

! Im so alone, have no support, his pediactrition is hard to get hold of, if not impossible ...they wont admit we need help with diet needs here as they wont connect them with autism my 12 year old autistic son is soiling himself on a daily basis, His school is miles away so I cant get him like I thought Id get lifts there but it costs me 25 quid each time school send him home (like today) with it..They rang n said he is crying n he has come home saying he wasnt crying!..He told them he dont need to go home but hey have sent him anyhow ...Docs have given him movical to get rid of a 'blockage' he has had last 10 years of his life apparently...he has for the first time in his life gone to high school with no 121 and gone into an SRB and every day im getting letters about him being rude agressive and shouting etc he cant cope yet his middle school said he is too smart for special school..social services wont help us cuz they 'dont deal with autism' even though I pointed out he beats the crap out of my children who are under 5 every single day even wacking round the head of my son who suffered a brain injury ....I do not know where to go or what to do anymore!! :'(