Unwanted sales calls — Sterneintrag im Telefonbuch (*)

Direct answer

Cold calls to consumers are banned or opt-in in most EU countries, and the rest have a do-not-call register: register your number once, and every call after that is a fine for the caller. Tell each caller "remove me, I object" — that objection is absolute under GDPR. Report persistent callers with the number and time to Sterneintrag im Telefonbuch (*) / SECO (seco.admin.ch), which enforces the telemarketing rules, and to EDÖB — Eidg. Datenschutz- und Öffentlichkeitsbeauftragter (+41 58 462 43 95) for the data-protection side. Ombudscom — Schlichtungsstelle Telekommunikation (031 310 11 77) collects patterns and scam numbers.

Call firstSterneintrag im Telefonbuch (*) / SECO

Report toEDÖB — Eidg. Datenschutz- und Öffentlichkeitsbeauftragter

If that failsOmbudscom — Schlichtungsstelle Telekommunikation

🗣️ What to say

"I am registered on the do-not-call list / I object to any marketing calls. Remove my number and my data from your records now and confirm in writing. Which company are you, and where did you get my number?"

🪜 Step by step

Register your numberOn the national do-not-call register; it is free and takes a minute.
Ask, record, hang upCompany name, where they got your number, then "remove me". Note date, time and the calling number.
Objection in writingTo the company, if you know it — GDPR Article 21; marketing must stop immediately.
Report to Sterneintrag im Telefonbuch (*) / SECO and EDÖB — Eidg. Datenschutz- und ÖffentlichkeitsbeauftragterNumbers, dates, what they sold. Fines follow patterns of reports.
Block on the phoneBlock the number, enable the carrier's spam filter; report scam calls (fake bank, fake police) to the police as well.

📇 All contacts

Sterneintrag im Telefonbuch (*) / SECOA star entry bans marketing calls; SECO takes complaintsAsk your provider for the star entry🔗 www.seco.admin.ch/seco/de/home/werbe_und_geschaeftsmethoden/unlauterer-wettbewerb/unlautere-telefonwerbung.html

EDÖB — Eidg. Datenschutz- und ÖffentlichkeitsbeauftragterSupervision, reporting of breachesWhen the company does not answer or misuses data📞 +41 58 462 43 95 🔗 www.edoeb.admin.ch

Ombudscom — Schlichtungsstelle TelekommunikationDispute resolution with telecom providersAfter complaining to the provider without a solution📞 031 310 11 77 🔗 www.ombudscom.ch

Stiftung für Konsumentenschutz (SKS)Advice, template letters, complaints deskWhen the seller refuses🔗 www.konsumentenschutz.ch

❓ Frequently asked

They said I "agreed" on a comparison site

Consent to marketing must be specific and separate; buried consent is invalid. Withdraw it in writing and report.

The number changes every time

Spoofing. Report anyway with the times; the regulator traces the carrier behind the calls.

A "contract" was concluded by phone

For consumers, most countries require written confirmation for phone sales; a contract you never confirmed does not exist. Dispute it in writing.

📎 Sources

Last checked: 2026-09-26

🔎 Common searches

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“stop unwanted sales calls Switzerland”
“do not call register Switzerland”
“report telemarketing calls”
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☎️ I keep getting unwanted sales calls — how do I stop them, and who enforces it?