BSNL Pre paid mobile 9424296481
Recharge amount not credited fully as per BSNL Dhamak offe

I have recharged for a sum of Rs.500/- on 27/03. As per BSNL dhamaka offer 50% extra talk value was to be credited whereas, I have been credited with a sum of Rs.680/- instead of Rs.750/- . The balance amount may pls be credited to me at the earliest.(Mob No 9424296481)