At times my account balance is debited even when a call is received. I have deposited Rs.50/- from no. 157012 on 6th May 2009 at 9.38 am with ref no. 157012. After receipt of message regarding credit of amount, I have made following calls.
9777616650 – duration of call 00:00:00
9777616650 – duration of call 00:00:14
9338805413 – duration of call 00:00:23
9338805413 – duration of call 00:01:31
9437378117 – duration of call 00:00:37
9438278899 – duration of call 00:01:54

Amount debited after above calls is Rs.10/- and the balance amount shows Rs.40/-

Please rectify the error and intimate