[Resolved]  Hindustan Unilever / Pure It — Battery is not purifying less water than specified

Address:

Hooghly, West Bengal

Hi,
I am using a Pure it from Hindustan Unilever for since 2007 (customer id - [protected]). In Pure it a battery is used and the battery is supposed to purify a certain litres of water like 1500 lit or 2250 lit depending on the capacity of the battery.
Recently I felt that the battery is not purifying the amount of water which is specified. For the last one year I am making a note of this thing and with my utter surprise I found that the battery which is supposed to purify 2250 litres of water is actually purified 1591 litres of water and the battery which is supposed to purify 1500 litres of water is actually purified 555 litres of water.
When I lodged a complaint regarding this the answer was given by the person who attended is like the battery was installed on 10th June, 2010 and it was worked till 26th August, near about 3 months, so it is expired.
As the battery was sold by telling that it will purify an given amount of water it should do so irrespective of the duration. In my family we are only 3 persons and we can use it for as many years as we want unless it purify the specified amount.
When I lodged another complaint no one bother to come and third time when a complaint was lodged a person came and gave a feedback from outside my house that he heard we lodged a complaint regarding leakage and he did not even bother to come inside my house.
I lodged my first complaint on 28th August, 2010 but I have no received a proper clarification till date.
Want a proper justification for this incident.