Justin Bieber neglects his poor grandparents?

Justin Bieber has abandoned his grandparents even though they’re struggling for money.

According to American tabloid the National Enquirer, the singer has given one thin dime to George and Kathy Bieber, who lovingly cared for him as a baby.

George has been out of work for months with a back injury, which his wife Kathy, 54, works like a dog at a sweltering factory job, insiders say.

“Kathy works hard to make ends meet, and she and George are hurt that Justin hasn’t offered them any financial assistance,” a source said.

“Kathy has the filthiest, hottest and most physically demanding job in the factory.

“She spends a large part of her days lifting 50-pound bags of raw powder, and then dumping the powder into a large mixer.

“The factory has 15 furnaces going at full blast, so the room where Kathy works normally maintains a temperature of around 102 degrees….”