TW - ASD and suicide prevention

Are there any suicide prevention support services aimed specifically at people with ASD? I'm not sure what I'm actually asking for in particular. I have a strong urge to hurt myself but traditional helplines are not good for me because I can't speak on the phone. I use the Samaritans email service, but I have noted a pattern in their responses which makes me suspect that I might not be communicating with an actual person on the other side. Besides, I have a fairly immediate plan and email response takes some time. 

I just want someone to understand that I don't want to be autistic any more. The daily effort I expend to do things that other people take for granted is greater than the sum of the rewards I get for trying. The only way I can think of to get a rest is to switch my brain off permanently. I would appreciate someone who could guide me towards a different strategy that works.