Vodafone has launched two new bonus cards for Kolkata prepaid subscribers. With these cards Vodafone Kolkata subscribers will be able to make outgoing phone calls to Bangladesh at cheaper rates. Priced at Rs. 36, Bonus card 36 allows customers to make outgoing calls to Bangladesh at Rs. 2.99 per minute. Whereas, Bonus card 42, priced at Rs. 42, allows customers to make outgoing calls to Bangladesh calls at Rs. 0.06 per...