National Credit Act 34 of 2005
Section 126B — Prohibited collection practices
“A credit provider or debt collector must not use collection practices that amount to harassment, including making excessive calls, threatening violence or unlawful action, publishing or threatening to publish your name as a defaulter, contacting third parties without your consent to expose or embarrass you, or misrepresenting their legal rights.”
Threatening to call your employer, family, or neighbours about your debt is specifically prohibited. Calling them and disclosing your debt without your consent is an unlawful act. You can report such conduct to the National Credit Regulator, the Debt Collector's Council, and the South African Police Service if threats are made.
Debt Collectors Act 114 of 1998
Sections 7–8 — Code of conduct for debt collectors
“A debt collector must be registered with the Council for Debt Collectors. A registered debt collector may not use threatening, abusive or obscene language, make false statements of fact, threaten legal action they are not entitled to take, or contact a consumer at unreasonable hours.”
A debt collector who threatens to contact your employer or family about your debt, or who calls at night or at work, may be violating the Debt Collectors Act. You have the right to ask for the debt collector's name and registration number with the Council for Debt Collectors, and to report unregistered or abusive collectors to the Council.