Kerala Water Authority — Anomaly in billing

Address: Alappuzha, Kerala, 68813

Website: epay.kwa.kerala.gov.in

Iam a consuumer of water authority with consumer no awn/2002/d of p h sub division alappuzha section. the bill no 18322613 issued to me on 9-5-2016 was paid on[protected] using the debit card of canara bank. a message was obtained in my mobile no stating that an amount of rs 145.45 is debited from my account on 17/05/2016 towards pos withdrawal. my bill amount was rs 134/-.
But on[protected] i got the bill no 19367834 for paying rs 305 /- including an additional amount of rs 180/- which is arrear.
Since i have already paid the previous bill i request you to look in to the matter and rectify my complaint