how odd, they say the helpline is 24 hours on the website.
could you try one of these then?:
PARENTLINE PLUS (For Families and Stepfamilies) 0808 800 2222
RELATE (Relationship Counselling) 0845 1304010
SAMARITANS 08457 909090 or 08457 909192
GINGERBREAD (For Single Parents) 0800 018 4318
REFUGE DOMESTIC VIOLENCE HELPLINE 0870 599 5443
WOMENS AID 08457 023468
NSPCC 0808 800 5000 or 0800 056 0566