Ask.fm? Is there any way possible to find out who said something anonymously?

I've been getting threatening statements on ask.fm Now i know not to respond back and just block them but even though that has been done. I don't need to go through any downloading or tracking IP addresses. I need just need a simple way to find out who is sending these threatening statements since they are saying this anonymously so i can report them to the police. Is there any possible way I can find out who sent these statements anonymously? Contact phone number for ask.fm? Anything i can do on my Apple Iphone or computer? Anything? If you know please comment and Thank you so much. I really do appreciate it.

After they have asked the question… No. What you CAN do is go to your settings and change questions to where people can't ask anon questions… Meaning you will see their name when they ask. Also by not responding they will stop asking you bull ***. Its real easy. Hope i helped!