Ros Bruce, from Essex, said her 10-year-old son got an Xbox One for Christmas, and he and a friend had spent weeks planning what games they would play together online.
She said they had been downloading a game since 09:00 GMT - and by 23:40 it was still not ready.
"He has spent most of the day in tears," she said.
Ros Bruce, from Essex, said her 10-year-old son got an Xbox One for Christmas, and he and a friend had spent weeks planning what games they would play together online.
She said they had been downloading a game since 09:00 GMT - and by 23:40 it was still not ready.
"He has spent most of the day in tears," she said.
"He says it's been his worst Christmas ever.
"I think Xbox should compensate us all."