Bangalore Water Supply & Sewerage Board [Bwssb] — Extra deduction of bill money while paying bill

Address: 560037

Website: BWSSB.GOV.IN

Sir, while paying bill of bwssb on 21.08.2016 for bill no.E-[protected]of rs 8110.00, rs 8203.27 deducted vide txn id.[protected].
Same way on 30.07.2016 bill no.E[protected] for rs 8150.00, rs 8240.00 was deducted vide txn id.[protected].Thus on 30.07.16 rs 90 more was deducted and on 21.08.16 rs 93.27 was deducted more. But bill generated was for rs 8110&rs 8150 respectively.
Request refund of extra money deducted.
Thanks.