Removal from SA

I was on SA last TY - For various reasons - this TY, and for the forseeable future, my income is fixed and I wish to return to PAYE

I emailed HMRC through the usual message system and received a response "use our webmail to contact the self assessment helpline direct - giving your details"
Try as I might - I cannot find the link to email the self assessment hotline
Does anyone have a working link/email address ?

Am I right in thinking that HMRC are not trying to get people OFF SA any longer ?