Since this is a magic website and not a social services website, here are some magical suggestions. Of course take action in the physical world like you said you would, but that's enough of an admonition.
There is a whole hierarchy of things you can do to try to improve your situation, magically speaking, ranging from "Harm None" to "Destroy Your Enemies." Pick and choose as you see fit.
1) Start Peaceful Home work. This is a family of spells and workings which usually include spiritual house cleansings coupled with candlework and other spellwork that enhances harmony in a house setting. This is nice, high vibrational work that many find helpful, but it's usually used in unpleasant circumstances like marital arguments - not where safety and abuse is at issue. Still, it's the least restrictive Step 1, and you might want to try some Peaceful Home work in conjunction with something stronger. Google "Peaceful Home" and look for Lucky Mojo webpages.
2) Put your parents in a honey jar to sweeten them up. Google "honey jar spell" and look for Lucky Mojo webpages.
3) Erect some sort of hardcore personal protection. This is a super varied topic, ranging from energetic wards and shields, petitioning Diety, altar work, amulets, talismans, mojo bags, spiritual baths, personal sigils, rituals, and candlework. Personally, i love Fiery Wall of Protection spells. Google them and you'll find one or two.
4) Do work to redirect your abusers' actions back to them. This is called reversing work, and even some people with a Harm None restriction can be comfortable with this type of coercive spellwork - depending on how "justified" the situation is. I like reversing work because the target is in charge of their own experience - they project out hate and pain and they get it reflected back to them. They project out sunshine and light and they get sweetness back. Reversing work is usually done with reversing candles and herbs and lots of mirror work. Again, the Lucky Mojo website is your friend.
5) Do spellwork to bind and restrict the abusers. Key words are binding spells or freezer spells. There are a lot to choose from including knot spells and spells with doll babies. I don't know how much opportunity you have to get and work with occult supplies, but i really like human figure candles for this kind of work. You can get a male and female candles to stand in for your abusers and really go to town - much simpler than sewing doll babies.
6) Destroy your enemies. It's an option for sure. Whenever people come to me asking about death spells i ask them if they are comfortable with murder. Granted, they're unlikely to go to jail for a successful death spell, but the intent is exactly the same. I know you haven't asked for this, so i just add it for the sake of being complete.
I hope this helps, and best of luck. Remember, the Universe gives you the *exact* parents you need in life, even if it seems like the greatest injustice. Later on you may look back and see exactly why you were chosen for this unfortunate set of circumstances. Bless you in your journey.