Cryptic 999999

Ever since I have begun being hacked, the numbers 9999 show up again n again. Back when I. Used to use Facebook people I didn’t know it would send me a instant message saying 99999 people text me all day, saying that with a thumbs up sign. I’m quite frankly sick of it and knowing that a “friend” tried to trick me and download messenger either day really makes me mad. Does anybody know what the 999 means besides that equal to one math,theory? Video clips relevant to me with a Hackrrs codes anyway but I have no idea what they mean if anyone does, please enlighten me.