Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh
I empathize with your situation. I also pray that Allah inspires you with patience and provide you with consolation and relief.
Although you are allowed to save yourself from harm inflicted upon you, you can never cut off your relations entirely from your father or mother or your close blood relations. Cutting off blood relations is one of the gravest of sins in Islam. Therefore, I would advise you against it.
While saying this, I do not mean to say that your parents are not accountable for their alleged cruelty towards you. They will be responsible for their actions; you will be rewarded for your patience and acting kindly towards them.
I am basing this on the advice of the Prophet to one of his companions who was consistently victimized by his blood relations, in spite of his kindness towards them.
So, I would advise you to remain on a high moral ground. If you do so, you will be vindicated. Allah will reward you abundantly.
Almighty Allah knows best.
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