The gross message

hurmm...why i still get the gross message...urgh...
i don't know how to disable it because i get from someone's number...
who? i don't know...
the message sounds like this:
"anda kesepian", "sepi" and etc.
uh..gross!!!
benci..benci..benci..
if someone read that message accidentally without noticed (he or she received the message and read it), argh!!!
rasa macam nak saman je orang yg bagi tuh...huhuhu