Britney Spears has reportedly infuriated bosses at the Promises Treatment Center in Malibu by constantly misbehaving and acting out.

Earlier reports claimed the star had been breaking the rules by using her mobile phone and leaving the facility to go shopping but an inside source has now told Star magazine: “Britney has a seriously bad attitude problem.”

“She’s been very demanding, acts like a 12-year-old and throws temper tantrums when she doesn’t get what she wants. She refuses to pick up after herself and even asked if she could hire a maid!”

“She’s asking for this and that, special food, special everything and she’s not that nice to anyone.”

“She keeps saying she is just sick from postpartum depression and that she does not have any real addiction problem, which is a joke. She has an addiction.”