Im scared my daughter is addicted to facebook?

[Julie]

I'm scared my daughter is addicted to Facebook. My worries first started when I realised she would literally check her phone every minute to see what new on her news feed. And how she ran up a huge phone bill when on holiday due to her checking Facebook regularly. It was due to the huge phone bill, and the fact I said she had to pay it off that her phone was disconnected till the balance was paid. I also turned off the house Wi-Fi so she couldn't connect her phone to this. What I witnessed what a full blown melt down. She was angry moody and aggressive towards my self her father and siblings. She even took my phone off the side looked herself in the bathroom in order to use the internet on it to check facebook.
Does anyone have any hints or tips for this please!