Changes to school careers guidance have risked "squandering" the futures of young people, a children's charity has warned.
Barnardo's said the Government's decision to axe the duty on local councils to provide a universal careers service was "jeopardising" many people's chances of getting sustainable work.
The replacement of face-to-face guidance with online or telephone-based services following cuts to the Connexions service has been "wholly inadequate", a report by the charity claimed.
Many teenagers were unaware of the career services now available to them, it said.
According to the Helping the Inbetweeners report, young people not destined for higher education or advanced apprenticeships but also not considered most vulnerable to be out-of-work, education or training, were least likely to receive careers guidance.
Barnado's interviewed 29 young people from across the county and found none of those questioned were aware of the National Careers Service (NCS) website or Government-funded Plotr site.
The NCS helpline - which is free to call from landlines but costs up to 40p per minute from a mobile - was "virtually unaffordable" for many young people, the charity said.
Since last September there has been a duty on schools and colleges to provide all pupils aged between 13 and 16 with impartial careers advice.
Barnado's has set of a raft of recommendations which it believes will improve the careers advice system including a guarantee that young people will receive face-to-face guidance should they request it.
The Government must clearly indicate how much resource schools are expected to devote to providing effective careers guidance and betters promote online services available, it said.
The charity also called for the national NCS phone line to be free to call from mobiles as well as being Skype-accessible so callers can gain face-to-face advice.
Barnardo's assistant director of policy Jonathan Rallings said: "Changes to our careers guidance system risk squandering young futures by failing to guarantee sufficient vital face-to-face support for people who need it.
"The near-total lack of awareness amongst the young people interviewed about the Government's website and helpline means that they are effectively offering 'ghost' services in the place of meaningful advice.
"It's crucial that the Government doesn't miss the opportunity to step in at this pivotal age, especially when access to trusted, personally tailored careers advice at an early stage can help to make the difference between young people sinking or swimming in the world of work."
A Department for Education (DfE) spokesman said schools were under a legal obligation to deliver careers advice and the changes had replaced a "patchy, costly" system.
A spokesman said: "For the very first time this Government has introduced a legal obligation on schools to deliver independent and impartial careers advice for all pupils up to 18.
"This replaces the previous system which was patchy, costly and often of poor quality.
"The National Careers Service provides a high quality helpline and webchat service which has been used over 67,000 times in its first year alone, and a website which has attracted seven million visits.
"The website offers a free call back service and there is also a smartphone app coming soon.
"We have issued guidance to schools and colleges to help them fulfil this new obligation and Ofsted has said it will prioritise the inspection of careers guidance."