long wait for hospital appointment

For issues specific to autism / Asperger Syndrome.
My wife has ASD and aspergers. we have been referred to the local(ish) branch of support but have heard nothing back. my wife has chased gp referral repeatedly but still nothing..... How long will we be kept waiting. we have a 10 month old daughter so getting support in pace right now is vital/
Brief guide ... within 18 weeks according to the Government :

https://www.nhs.uk/using-the-nhs/nhs-se ... n-england/

National Autistic Society ... community forums ... any indication as to waiting times in the real world ?

https://www.autism.org.uk/get-involved/ ... nity.aspx#
weve been waiting over 32 weeks. ive even asked them for a letter just to show her that shes on the waiting list. they confirm she is on the list but wont put it in writing.... im so angry.
In which case , check out that Government web site ... right of recourse ?

Similar problems reported on the NAS forum ?

Advice given ?
i will see what i can do. i know for a fact i will be personally chasing the referral in the morning