Telemarketing companies are businesses that provide telemarketing services to other businesses or organizations. Telemarketing is the use of the telephone to solicit sales, donations, or other forms of business. It can also be used to provide customer service or technical support. There are many different types of telemarketing companies, each specializing in a different type of telemarketing. Some companies focus on outbound telemarketing, where they make calls to potential customers and try to sell them a product or service. Other companies focus on inbound telemarketing, where they take calls from existing customers and provide customer service or technical support.