Problem

Okay, so i'm 16 and I"m living with my mom.
I've been living with my mom and sister for like a little over a week now. I use to live with my grandparents. My grandfather( who is not my birth grand father inever met my birth grandfather ) practically verbally abuses me. Well..use to. He says how holy and how much he loves Jesus. But yet he is such an evil man. When i lived with him, he called me stupid because i can't make a decent grade in geometry no matter how much i try in that class ijust can't get good at it. He always made fun of me ( in the bad way) and every time he called me lazy and he said i was uselses..i said not to insult me..and he said the rudest thing all the time: it's not an insult unless it's true..so yeah he did all that. WEll one night the night were i moved wht my mom he just came in my rom and started yelling at me..and yelling at me..and i didn' tknow waht i did..i did nothing..actually i did NOTHING and he just yelled and said how i blamed everything on everyone and how nothing is ever my fault and he wouldn't stop yelling at me no mater how much i yelled for him so stop it got so bad that i started crying and he called me a cry baby and said that all i do is cry..well i have asthma..but ihave panic attacks i had to hav e an inhaler becuase my attacks are so bad..well he scared me that i fell to the ground becuase i couldn't hold my self up becuase i got so scared and was in shock and i couldn't breath and he said oh cry you big baby yeah fall to the ground and he just kept going..so finally my granny pushed him away to stop yelling at me. And they got into it and he just wouldn't stop. Well..this goes on like everyday...he's always acted this way since i turned 13. well..my mom was a 16 year old that did drugs..and all that and always got into trouble. my grandfather(nonbirht) drove her way and he was the reason she ran away..for a while. Well..just because seh didn't go to college and she didn't have enough money to do everything everyone else has done...she's such a horrible mother..i have a sister that has a lot of disablilities..and my grandfather called her retarted and my mom a b*tch a whore and so many other words...well..i couldn't take it anymore..and my mom wanted to protect me so i moved in with her...well..i have my dads side of the family in georgia..well.. becuase ilive with my mom..they don't want to send me money or cards or gifts anymore...now i would like to ask...do you think that there is any reason at all they should act like this because i live with my MOM!?

I think that your grandfather is wrong in his thinking...

Was he an army man or someone who worked in the armed or police forces...?

Well he was in the military for a while but never made it through because he got phsyicall ill and had to retire becuase of how ill he was but..i really6 think he over doses...becuase he takes medicine so much..if i am sick..he gives me benidril..wich is for allergies..not for a virus..?