What do I do if the link on my password reset email for instagram in invalid?

[Izzy]

Here is the backstory, so on Saturday I wanted to reset my instagram password. After I did that it said thanks, *username*) But that was not my username. I was curious so I logged into that account using the new username and it was a blank account. I didn't know what was going on so then I tried logging in to my account. It wasn't allowing me to. I tried everything but it did not work. When I got the password reset emails and I clicked the link it said it was and invalid link. So then when I went to the main reset password page they said Thanks! please check w**************2@yahoo.com. That wasn't even my email account. My instagram account was not deactivated because my sister checked my account and it was still there. I am worried I was hacked or someone got the email and changed my password to something I don't know. The help center has no answers and instagram is not replying to ANY of my emails or phone calls (i found their number) I am desperate! I really want my account back please help!