Help, I Want to Contact My Mama? Longish but Please Help Me?

okay where to start…
i was bad kid.
i did drugs for 14 years and my parents found out almost a year ago when i started getting arrested. when they sent me to rehab they gave custidy to my daddys parents.
my mom and dad are still togeather.
so when i got outta rehab i moved to texas from ohio to live with my grandparents theyre in there late 50s.
so it sucks here.
really.
i have no friends and they wont let me make friends and i do online school and yeah:(
and i slept with my contacts in and didnt change into my PJs.
and nobody had told me i’d get in trouble for doing that, but you know what they did?
no cell, no house phone. im not even allowed to call my mom and dad.
no internet (they don’t know my school computer goes to this website, but it blocks email so yeah)
no contact with my bestfriends till i’m 18(who have never used drugs and live in illionis and theyve helped me with a lot and my parents told me i was only staying here for awhile and ive been off drugs for 5 1/2 months:( and i dont think theyll let me go back with my parents but its not fair)
follow all other house rules (which gives me a bedtime and a wake up time. I’m 16.)
and i snuck calling my dad and he said he was done with me!!
and i want to try my mom and see if she’ll still do something and i want her to take me home and i swear i’ll follow there rules and i wont mess up again but I AM NOT STAYING HERE.
but theres no way to call my mama.
i could sneak it but i dont know here new number
and i cant do email on this computer and they always have there laptops with them and never leave me home alone.
so can you help me find a way to contact my mama? she has a myspace but i obviously cant get to that and i cant email her and yeah:(
i know its bad because i guess i didn’t know how great they were until i had to live with my grandparents:(
and i’m not even allowed to cry here, they say i make myself cry to get them to feel bad for me and i don’t!!
what can i do to get ahold of my mama?
i meant four years sorry!
dude i said i ment fours years, I didn’t see that i marked 14 years, i meant four.