Hello all , i am a Turkcell subscriber but the problem is i don't know Turkish

and Turkcell keeps on spaming me and send me messeges
so what is (gnįtrkcll / İşTcell )?
also a strange messege came to me and took away 18 kontors suddenly :S
from website
www.cebin.de
so can you please tell me what to do to stop this messege?
also i am roaming with my number to egypt so the shortcut numbers like 3700 and 5555 doesnt work !!!!
thanks for your help

Mohamed