Abusive telephone solicitation, voice or SMS spam: what to do? - Voice Spam

Verified 09 janvier 2026 - Public Service / Directorate of Legal and Administrative Information (Prime Minister)

Soliciting by telephone for energy renovation work or for the adaptation of housing for the elderly or disabled

Since 1er July 2025, the law provides for specific rules for better protect consumers when they are approached by telephone for energy renovation work or for the adaptation of housing for elderly people or people with disabilities.

The professional must have the necessary qualifications or authorizations. Otherwise, these calls are prohibited.

These rules apply in addition to other obligations : respect of schedules, limitation of the number of calls, clear information on the identity and commercial character of the call.

In case of non-compliance, enhanced criminal and administrative sanctions may be pronounced: up to 2 years in prison and €300,000 of a fine.

Your situation

  • Voice Spam
Edit

Voice spam refers to a fraudulent practice of receiving suspicious calls, often from numbers beginning with 089, 081 or 082.

These calls hang up immediately after you pick up or stay online for a few seconds without interaction. If you don't answer, the number appears as an absent call, prompting you to call back.

The main goal is to push you to compose a overtaxed number, resulting in high costs. These actions can be considered as an attempt of scam.

Voice spam can also manifest via a classic number (for example, beginning with 01 40...). In this case, even if you pick up the phone, you are asked to call back an overtaxed number, which is also a fraudulent practice to extract money from you.

Warning  

If your correspondent picks up and offers you a commercial offer, it is a telephone solicitation not voice spam.

You can block the number of the correspondent by sending by SMS to 33,700 a message containing the mention Voice Spam followed by the number of your correspondent who prompts you to call him back.

The 33700 is the official platform to fight against voice and SMS spam.

An SMS message will be sent to you by 33,700 to confirm that you have received your report.

Sending an SMS to 33,700 is free if you are a customer with one of the following operators:

  • Auchan Telecom
  • Bouygues Telecom
  • CIC Mobile
  • Cofidis Mobile
  • Crédit Mutuel Mobile
  • Free
  • NRJ Mobile
  • Orange.

For other operators, the service can cost the price of a normal SMS.

In addition, some applications offer to block voice spam themselves. Your operator can offer such an application.

You can identify and report voice spam online, even if you received a call on your landline phone:

Identify and report online voice spam

When you report spam to 33700, the effect is not immediate. Processing spam requires the operator to have received several reports and to take measures that may take time to implement.

If you continue to receive abusive calls despite the steps you have taken to block them and unsubscribe from them, you may consider reporting them to the DGCCRF: titleContent or Cnil: titleContent :

Signal Conso: report a problem with a professional

Submit a complaint online to the Cnil

Who can help me?

Find who can answer your questions in your region

  • 0809 540 550 DGCCRF - ConsoResponse

    Are you having a problem following a purchase? Do you have a question about a point of law before buying or ordering?

    You can get an answer from an agent of the DGCCRF: titleContent by calling the 0809,540,550.

    Opening hours of the service:

    Number not overtaxed

    • Monday and Tuesday: from 8.30am to 12.30pm and from 1.15pm to 5.15pm
    • Wednesday: from 1:15 pm to 5:15 pm
    • Thursday: from 8.30 am to 12.30 pm
    • Friday: from 8:30 am to 4 pm