KATHMANDU: Ncell has launched ‘Dobbar Paisa Back’ offer, under which pre-paid customers who use certain amount from their main balance will get a chance to enjoy bonus double the amount spent every day throughout the campaign period. All Ncell prepaid customers can take part in the campaign for free by dialling 17124, reads a press statement. Once customers join the campaign, they will get information regarding the spending target which customers need to use from their main balance for double bonus return. Customers can know how much they have spent by sending a blank message to 17124. This offer is valid for 90 days unless withdrawn earlier.