User blog comment:Feistyyy/In Need of Advice/@comment-34588471-20180623224730/@comment-34588471-20180623230820

Instagram can be easily solved by blocking every account they use to harass you. Along with other Social Medias.

On Fandom, you could just ask any Mod or Admin etc. of a specific Fandom that you're in to block their IP, so they won't be able to message or stalk you. (Obviously, you would need some evidence before you start telling them that)