Random strangers (or pedophiles) on kik?

[Over The Ice]

For some reason random strangers keep getting my kik username and sending me the same messages. So far 3. Each of them have EXTREMELY generic usernames and names. They also seem to have the same pattern of kiks: "Hey, I was looking for fun, have I found it?" or some shit like that. Even if I say stuff like "piss off pedophile" they send messages as if they know I responded but didn't read what I said. 2 of three have sent me the same picture of a girls legs and asked for something in return. This is obviously a spambot, but how could I stop this from happening? And why is it just me that has ever gotten these messages but not my friends? I'm a boy, btw.

Please help. I think kik is becoming really dangerous. And I don't want it to be because it's a fun service. Thanks.