My dad is a abusive narcissist with a heavy gambling addiction and I don’t know what to do?

Anonymous
My dad doesn’t work and never did, he sits at home like a loser not paying 1 bill and relies on my mum. This year he has grown a heavy gambling addiction where he spent. 16k of money from loans he got from others. He now is struggling to pay these loans and is asking my siblings to give him money. My mum had told him to stop his gambling but he gets angry and aggressive towards her. He has attempted to hit her 5 times in one argument but i had to push him off her. He then says nasty things such as “your lucky i’m not marrying another women” & “god cursed you with her illness because she got her karma” (my mum has cancer), which leaves my mum crying. My dad has been openly cheating on my mum and everyone knows about it. I saw him go on dating sites and message more then 30 ladies flirting with them and looking for “fast friends”. He knows all of us know and my mum confront him about it but he says it’s because he’s bored and it’s not like he’s going to marry them which is so disgusting.

Yesterday my parents had another argument about nothing, he leaped out 7 times to hit her and threatens to hurt her saying he can’t control himself. He then gets angry & punches through the glass door leaving glass and blood everywhere in the house even on my clothes. Me and my siblings all cleaned his blood. When he came back from hospital he acted like he hadn’t done anything and was like no one even asked if i’m okay when i hurt my hand. But why would we if i just witnessed you try to hit my mum 7 times in front of me. He also says it’s none of my business if he hits her and that my mum is brainwashing all of the kids. If we try to confront him he threatens to beat me and my siblings.

I don’t know what to do as he is ruining the whole house and causing problems between all of my siblings. Everyday my mum cries and i want to get rid of him. My mum said not to call the police & neither would she ever divorce him because she needs his help with my disabled siblings.
My dad is a abusive narcissist with a heavy gambling addiction and I don’t know what to do?
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