Slagfrekvens

Slagfrekvens, also known as "slamming" or "call slamming," refers to a deceptive telecommunications practice where a customer is tricked into subscribing to a premium-rate service without their full knowledge or consent. This often occurs through misleading or fraudulent sales tactics, such as false advertising, high-pressure sales techniques, or unauthorized changes to a customer’s phone plan. The term originates from the sound of a phone dial tone ("slag") being altered or manipulated during the call setup process, which can lead to unexpected charges.

In many countries, including Norway, such practices are illegal under telecommunications regulations. Consumers are protected by laws that require clear disclosure of service costs and explicit consent before any premium or non-standard charges are applied. If a customer unknowingly subscribes to a premium-rate service, they may face recurring fees for services they did not intend to purchase, such as short message service (SMS) voting, chat lines, or other paid content.

To avoid slagfrekvens, consumers are advised to carefully review their phone bills, monitor incoming calls and messages, and verify any unfamiliar charges. Telecommunications providers are obligated to inform customers about potential costs upfront and provide easy ways to cancel unwanted services. Authorities, including the Norwegian Communications Authority (*Nkom*), investigate complaints and take action against companies engaging in fraudulent practices. Customers who believe they have been a victim of slagfrekvens can report the incident to their provider or regulatory bodies for resolution.