Livewell Southwest provide community health services as well as adult mental health and children’s services (including CAMHS) in Plymouth.
They have a dedicated page for online feedback via https://www.livewellsouthwest.co.uk/contact/feedback/ .
You can send a compliment or make a complaint. If you cannot do this yourself, they are happy for someone to do this on your behalf, however, a third party should have your permission to do so.
You can also contact customer services via Email at: firstname.lastname@example.org