Free calls from callingcards.com group

Callingcards has been in the business since the birth of the pre-paid calling card in the USA. They have three companies and each claim to offer free trial promotion of 10 free global minutes, including India, with no credit card required.1. http://www.callingcards.com/ (10 minutes free)2. http://www.mobilecaller.com/ (10 minutes free)3. http://callingcard.com/ (10 minutes free)You can try these