Llais also offers a free, independent complaints advocacy service to support anyone wishing to make a complaint about health or social care they have received.
Mae Llais hefyd yn cynnig gwasanaeth eiriolaeth annibynnol ar gwynion i gefnogi unrhyw un sy’n dymuno gwneud cwyn am y gofal iechyd a chymdeithasol y maent wedi’i dderbyn.