BSNL is providing a chota credit as a loan for their BSNL consumers. The BSNL company giving a loan of Rs 10. It is available for only prepaid customers. Just you need to type SMS CREDIT to 53738. It is similar process like other companies provide loan. That's it. If you recharge within 24 Hours , you will be charged just Rs. 10. If you charge after 24 hours you need to Rs. 11 to service provider.