Hi Nintendofan! I suggest you write down your problems and needs, and your inability to communicate verbally, and then give this written info to the people you are trying to get help from.
CrazyCatLord is right. You should look into support groups in your area. And, there are no magic ways to make people be nice. You either have to ignore them or avoid them. The exception is if they get violent. You do have the right to protect yourself if someone tries to physically hurt you. Unfortunately, getting physical with someone just because they are nasty, but are not being physical with you, will only get you in trouble.
Do write your info down for the people you need help from, and do look into those support groups.
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau