Amanda Bynes is losing allies fast. Her entire management team -- her manager, her publicist and her entertainment lawyer -- have dropped her as a client in the past few weeks.

According to TMZ, none of them have been able to get in touch with Amanda for the past few weeks. They all say they've tried to help with her legal and personal issues, but she hasn't returned a single call. So they've decided that if she's not interested in their help, they're not interested in offering it.

Sources say Amanda has cut off contact because she feels she no longer needs their services -- since she's retired from showbiz.