You are in South Africa and the person doing this is in the United States. You report at home, and at the same time trigger action where they actually are.
10111 (SAPS national emergency / Flying Squad). From a mobile phone you can also dial 112, which routes to the national emergency call centre.
Most people here are not in an active emergency. To start an official record, use the non-emergency steps below.
Keep doing everything below in South Africa. At the same time, the fastest leverage often sits in the United States, where the person actually is.
The fastest practical levers against a U.S.-located perpetrator are: (a) platform reporting and content removal directly to the host service (the U.S. has no general government takedown order against a private individual's speech, and platforms have Section 230 immunity for user posts, so the platform's own abuse/terms process is the front-line removal tool); and (b) a state civil or criminal protective / restraining order (a stalking or harassment protection order, process varies by state), which once issued is enforceable against the U.S.-located respondent and makes any further contact a new, more readily charged offense. Where the conduct is interstate threats or cyberstalking, a U.S. federal case (18 U.S.C. § 875(c), § 2261A) opened via the FBI is the route to criminal action and to compelling evidence from U.S. providers.
A foreign victim whose harasser is located in the United States does not file with U.S. federal agencies from abroad and wait. The reliable inbound path is police-to-police: report the matter to your own national police / cybercrime unit in your home country and ask them to channel it to U.S. authorities. Two official conduits carry it: (1) INTERPOL, where your country's National Central Bureau transmits the request to INTERPOL Washington (the U.S. NCB inside the DOJ, the U.S. contact point for the 196-member INTERPOL network), and (2) a Mutual Legal Assistance Treaty (MLAT) or letter rogatory, the formal government-to-government request handled on the U.S. side by DOJ's Office of International Affairs, used to compel evidence such as subscriber records and content from U.S. platforms. U.S. platforms (where most of the abusive content sits) are themselves in the U.S., so a U.S.-based investigation or valid U.S. legal process is the lever that reaches them. In parallel, a victim can and should file directly with the FBI Internet Crime Complaint Center (https://www.ic3.gov) and the FBI tip line (https://tips.fbi.gov); IC3 accepts international complaints and may refer them to the appropriate U.S. or partner agency.
There is no single U.S. government body that will unmask an anonymous account or order a takedown on a foreign victim's request without a U.S. investigation or U.S. legal process. The most effective sequence is: preserve evidence (dated screenshots, URLs, usernames, headers), report to your home-country police so they can engage INTERPOL Washington / the MLAT process, file directly with the FBI/IC3, and pursue platform removal plus a state protective order against the named or identified U.S. perpetrator.
File a non-emergency report, and do the single most important thing: get your report / reference / occurrence number. That number is the key that unlocks platforms, prosecutors, employers and protective orders.
At the Community Service Centre a police official takes your sworn statement, opens a case docket, and registers the case on the CAS system. You are given a CAS number (the case reference) by SMS or telephonically - keep it for all future enquiries about the case. The docket is the main source document recording the offence(s) and is assigned to a detective for investigation. Bring all evidence: screenshots, message logs, URLs, dates/times, phone numbers, email headers, and any identifying info on the harasser.
Lets you submit crime tip-offs/information and find your nearest station. Treat it as a supplement; to obtain a CAS docket and reference number for an investigation you still generally need to give a sworn statement at a station.
Toll/share-call line to report criminal activity anonymously. Use for tips; it does not by itself open a docket in your name or generate a CAS reference - go to a station for that.
File here in addition to, not instead of, your local police report.
First port of call for any cybercrime/online harassment complaint. The station opens the CAS docket; the detective investigates and, for malicious-communications offences, can apply the Cybercrimes Act investigative tools. SAPS Head Office switchboard: +27 (0)12 393 1000.
SAPS specialised unit for serious, organised, commercial and priority crime (including serious cyber-enabled fraud/extortion). Escalate here when a matter is high-value, organised, or a station is not progressing it. National Head Office, Silverton, Pretoria.
Regulator for unlawful processing/disclosure of personal information (relevant to doxxing). Lodge a POPIA complaint via the eServices portal. Enquiries 010 023 5200; Toll-free 0800 017 160; enquiries@inforegulator.org.za. eServices complaint portal: https://eservices.inforegulator.org.za/
SAPS unit (sits within SAPS) that is the channel for transnational police cooperation - the route by which a foreign victim's police force triggers SAPS action against a South Africa-based perpetrator. Reached police-to-police, not directly by the public.
This page covers the cross-border part. For the full South Africa guide, the exact offences to name with official statute links, and the escalation ladder, see Reporting online harassment in South Africa →