It's really very much annoying whenever you receive unwanted telemarketing calls and mobile networks service subscription calls at a very busy schedule. Now you no need to receive any such calls and SMS, simply activate DND service and stay free from unwanted telemarketing calls. Remember : Registering with DND will never affect your services such as Bank SMS alerts, Online booking confirmation SMS, and Online accounts security notification SMS and Social media SMS alerts, etc. Also Read: How to create multiple twitter accounts with the same email ID How to Block Unwanted Services Subscription Calls From Mobile Service Provider Mobile Service providers will offer several different services and ask us to subscribe through calls and SMS by pressing some keys or reply through SMS with a certain number, but in some cases, even an accident click can cause the subscription to the services and will be renewed automatically following the next month without the prior notificati