Twelve-year-old Dean Keating suffers from Cornelia De Lange Syndrome, a genetic disease which has left him deaf and unable to talk. He also has breathing difficulties and is in constant pain.
When Dean and his mother Jane appeared on The Sharon Osbourne Show fourteen months ago, they were promised a £3,000 "sensory garden" from The Sensory Company.
Sharon said: "We just want to make you happy and if this present makes your life easier that makes us happy too."
However, the gift never arrived despite constant calls from Jane to ITV and The Sensory Company. At one point, she was sent a talking dice for Dean, which Jane has blasted as "totally inappropriate".
Dean and Jane are now expected to finally receive the present after she contacted tabloid newspaper the Daily Star Sunday about the issue.
"It's no thanks to Sharon," Jane told the newspaper. "Dean was consistently let down with false promises from her and by The Sensory Company. I have called so many times but each time was fed excuse after excuse."
A spokesman for The Sharon Osbourne Show said: "We're upset to hear the family hasn't received the equipment as yet but we understand arrangements have now been made so that Dean has an extra special Christmas which he and his family will remember."