People caring for older, seriously ill or disabled loved ones in Wales are missing out on £66 million in allowances.
Carers Wales say a lack of advice and education has left thousands of carers without vital financial support.
The Department of Work and Pensions says the system is being simplified to increase the take-up of benefits.
Alexandra Lodge reports
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Passengers being urged to check before they travel as upgrading work begins between Cardiff and the Severn Tunnel.
Over 40,000 people in the UK have young onset dementia. One charity says there needs to be more support for people in Wales under 65.
It has since apologised and removed the Tweet, which included the potential customer's name, email address and phone number.