bobbi kristina & bobby brown*TMZ is reporting that sources close to Bobby tell say he hasn’t been able to contact Bobbi Kristina since arriving in L.A. Sunday night, despite placing several phone calls and making an attempt to physically see her.

We’re told Brown was turned away by Whitney’s family and friends … who are caring for BK at a home in the Los Angeles area.

According to our sources, Bobby is angry and frustrated because he only came to L.A. to care for 18-year-old Bobbi Kristina after she was hospitalized twice.

As for why he’s blaming Whitney’s mom for the freeze out — we’re told Brown thinks Cissy has hated him for years.

Meanwhile, the Houston family reportedly detests Brown so much that they may refuse to allow him into Whitney’s funeral reports Extra.

Insiders say Bobby Brown will “most likely be turned away” if he shows up.

Whoa, it’s gettin’ deep and uuuuugly.

Developing …