Haha fair enough. If you do know someone at Instagram, please just tell them to search for me in their support inbox. I've included identity verification in my email. They could also just reach out to the email I had in my account before the hack occurred.
Great question! My phone number isn't particularly private, but I'm not sure how exactly they found it. I have a guess, but it's pretty elaborate, so they may have found a simpler route.