The Public Services Ombudsman for Wales, Michelle Morris, upheld the complaint and also said that when the service ended in June 2021, the health board did not review patients’ needs in a timely manner.
She said it was a serious injustice to patients and their families and said the health board must take urgent action to ensure vulnerable people and their carers received the care and support they needed.
Ms Morris said the lack of provision, poor communication and slow response to complaints had caused significant distress.
“Carers described feeling abandoned and unsupported, unsure who to contact for advice or assistance, while having to navigate a lengthy complaints process with no clear outcome,” she said.
Ms Morris highlighted a similar report about Hywel Dda health board in 2021 about poor service planning and the failure to act quickly to make arrangements for patients when a service ended.
She said it was concerning there were similar issues again now in a different service area.
She also said other health boards in Wales provided a learning disability epilepsy service but there was no evidence that Hywel Dda intended, or was able, to provide a service or ensure a pathway was in place to refer patients elsewhere.