Why is there a call from the SMS agent?

Telemarketing usually comes from various channels, including but not limited to the following ways:

1. Buy phone numbers: Some companies buy phone numbers from third parties for sales and marketing activities.

2. Public resources: Some companies may use public resources, such as yellow pages, phone books or social media, to get the phone numbers of potential customers.

3. Customer interaction: Some companies may get the phone number of potential customers by interacting with customers, such as answering questions on the customer service hotline or website.

4. Online advertising: Some companies may attract potential customers by placing online advertisements, and provide telephone numbers in the advertisements to facilitate the contact of potential customers.

5. Partnership: Some companies may get the phone number of potential customers by cooperating with partners or distributors.

It should be noted that some companies may use unethical or illegal means to obtain telephone numbers, such as using robot dialing software for automatic dialing, or using pirated software for telephone number cracking. These acts may violate the relevant laws and regulations, and cause the company to face legal responsibilities.