Kerala Water Authority — Excess bill in consumer id [protected]

Address:

chithranagar,Thekkumbhagam. Tripunithura

I am a domestic consumer of kwa using very minimal water per day.
My minimum charge per month is rs 40/ and that is regularly paid till date via netbanking.
This month i got a bill showing an amount of rs 2435/ and the reason mentioned in the bill for excess amount as "prior bill adjustment".
I do not understand this.
This month mu usage is 6 units only.
My consumer no is tpr/14595/d and the meter no is 152049.
Pl verify records and correct the bill

E c kuriakose
[protected]