Services are not meeting the needs of my adult son

Hello . I wonder if anyone can help .

My son is 30 and lives in  a adult foster carer scheme  placement . His carer appears to  take as little care of him as he can , under the terms of his agreement  with the scheme . 

My son is a lovely person , but can become very frustrated and can have really bad meltdowns sometimes . 

He has very low self esteem , low mood and does not wish to be identified as being on the spectrum . He finds it very difficult to make any decisions as every option carries  equal weight for him and causes him frustration . 

He is therefore being allowed to live in one room with glass and rubbish all over the floor , and the bathroom sink is blocked . 

I have tried to contact the social work team several times since last September , but no one has returned my call . I have assumed that COVID has made the workload much worse . 

I am very concerned about him , and I wonder if anyone has had similar experiences , or might have any suggestions .

 Moving is very distressing for him ; as are  any significant changes .

He trashed his last carer's house , because she put some boundaries in that he felt unable to adhere to , which is why I think he has ended up in the situation he is in now .

 I'm grateful for the help and support that mental health and social work teams are giving us. However , I can't help thinking that this situation is not good for him at all .

Any suggestions at all would be very much appreciated .

I also wonder if anyone might know what services might be available to support for carers of adults who are neurodiverse .