Edward Bright, from Ripley, Derbyshire, lost his limbs when he was seven and needs help with much of his life.
When he turned 16 and reapplied for a benefit he was told he had to attend a meeting to be assessed.
The Department for Work and Pensions has now said a face-to-face meeting is not necessary.
Edward's family claimed disability living allowance (DLA) on his behalf to help towards the added cost of life as a quad-amputee but when he turned 16 he had to reapply for a personal independence payment (PIP).
The family were horrified to receive a letter calling him to a meeting with an assessor in Derby and threatening to withdraw the money if he did not attend.
His dad Steve said: "He has already been through all the assessments. Nothing has changed [in his situation] in the last seven years; nothing will change, so being called in to interviews every year is pointless.
"People with disabilities have enough appointments anyway. You should reach a level when it's flagged up on the system: no more interviews needed."
Since the family's case featured in the Daily Mirror, the Department of Work and Pensions has admitted the assessment is unnecessary.
"All DLA claimants are invited to apply for the working-age benefit Personal Independence Payment when they turn 16. In this instance a paper-based assessment has been completed and there is no need for a face-to-face assessment.
"We've tried to call the Brights numerous times to make clear there's no need to attend a meeting on Monday. A letter has been sent through the post."

30 October 2013 Last updated at 17:10 GMT
Last month, the government made changes so head teachers can no longer allow absence outside school holidays, unless there are exceptional circumstances.
It's because of concerns that some kids were missing school for family holidays during term time when it's cheaper.
But more than 125,000 people disagree, signing a petition against the move.
The petition says: "All children who have a good attendance record should be allowed the opportunity to enjoy quality time with their parents on an annual holiday of up to 10 days once per year."
But the government says it's giving schools more freedom to set term dates - which could mean parents could book cheaper holidays.
Ricky's got the story.

The Welshman, 31, led Team Sky in the Giro in May, but his hopes were ended when a police motorbike caused a crash on the Blockhaus climb on stage nine.
Thomas was forced to withdraw from the race, but he is fit to support Chris Froome's bid for a fourth Tour title.
The Tour, which begins in Dusseldorf in Germany, runs from 1-23 July.
Spaniard Mikel Landa, who was also involved in the crash at the Giro but recovered to finish 17th, is also in the squad.
Britons Ian Stannard and Peter Kennaugh are notable omissions, along with Wout Poels.
Dutchman Poels, who played a major role in Froome's victory 12 months ago, suffered a significant knee injury in February and only returned to race at the Route du Sud earlier this month.
Stannard and Kennaugh were both in the Sky team in the traditional Tour warm-up race, the Criterium du Dauphine, but have been overlooked in the final selection.
That means there are three Britons in the squad, with Froome and Thomas joined by road captain Luke Rowe.
Froome is aiming to win the Tour for a third straight year, and fourth overall, following victories in 2013, 2015 and 2016.
"We're ready as a team and I can't wait for the Tour to start now," said the 32-year-old. "Honestly, I just love it. It's a feeling that you don't get from any other race."
Team: Chris Froome, Sergio Henao, Vasil Kiryienka, Christian Knees, Michal Kwiatkowski, Mikel Landa, Mikel Nieve, Luke Rowe, Geraint Thomas.
The family of a teenager who lost his arms and legs from meningitis were shocked when told he had to prove he still needed a disability payment.
[NEXT_CONCEPT]
Your next holiday might seem like a long way off but there's a row brewing about when schoolkids in England should be able to take them.
[NEXT_CONCEPT]
Geraint Thomas has recovered from the injuries he sustained at the Giro d'Italia to be named in Team Sky's squad for next month's Tour de France.