Lest Stenberg get tangled up too much in the email-sender's unfortunately troubles, he should likely refer the emailer to Instagram and Spotify's customer support.
As an aside, hopefully someone can recommend to the emailer as well to use a different service to host high-quality versions of her photography so that potential clients can evaluate critical clarity in her technique. I'm not sure I'd want to rely on Instagram as the sole example of my work, but, maybe she's targeting a different clientele that I'm imagining.
As an aside (#2), who hacks Spotify accounts?