http://tor4sqofvveg2hrrreljy3ypa5hxn3a7q6haqktj4ohtta6f23ex74yd.onion/blog/hire-a-hacker-to-get-your-account-back/index.html
Mostly Instagram, email, and other social media account support provide little or no help especially when the hacker changes these details. Then, how can you get your account back? There is little you can try but first contact support if you still have details and can prove you own the account.