Voice SMS Service is provided to the customer where different users receive a call, wherein the customer’s pre-recorded message is played. These voice SMSs are sent in bulk by the sender; the motive of these messages is to tell the user about its brand/ services or further promote the same. It is transparent that these calls are becoming quite common and are getting massive hype in the marketing community. This service nowadays is also being used to check the availability of users before delivering an e commerce product at their residence.