what do i do when you find a website and its the wrong thing u wanted?

[Mary]

i used to have a twitter and my sis was able to delete the account and now on my facebook there was a game that says like which one would like it so say my friend mat liked pokemon and my friend kate didnt, it would which one likes pokemon and i would click on his profile pic. but thats not all that game was on facebook. it was also a flirting thing and so now i dunno how to delete it. strangers keep chating with me checking me out and think im hot. i do like this game but i dont like the flirting part so how do i delete this game on facebook????????????????/