Their IP address gets band then they can no longer use instantgram
See the related question - to an excellent answer by a fellow supervisor, as to what happens about reporting abuse.
No. Instagram do not notify people about it.
If there is child abuse, report it to child protection services.
50% of people would report the abuse
go to the bottom of the page and press report abuse
If you click the "Report Abuse" button you will send a forward to the Vandal Patrol division and they will check out the question. If you accidentally do this once or twice it shouldn't be a problem. If it is done repeatedly, the user will be contacted.
Reporting AbuseWhen you click on the red "report abuse" option on the top right side of the question and answer page, it sends the report to the appropriate people who will investigate it for obscenity, inappropriate content, etc. If they determine it to be any of the above they take appropriate action, which can include a warning, a temporary block, or even a permanent block. And how do you actually report spam or abuse?See the detailed information in the Related question.
Anyone.
yes facebook does have a report abuse button if you don't believe me check for your self
Twitter has a form that you can fill in to report abuse. Follow the related link to the form.
Report abuse to any person that you trust completely.
You can report them by clicking "report abuse" just above the question. Then describe the abuse in the report you file.