Teleman is SaaS application that allows you to make calls to your customers to promote your products. There is an IVR dialer where you can live call your customers and sell products. This is a twilio based voice-calling application so you need a twilio account to start your telemarketing service. You can send voice messages from a text file and also a prerecorded file. By adding new contacts to a group you can you can start a campaign.