Kerala Water Authority — I am complaining about new connection

Address: Thrissur, Kerala, 680688

Respected officer,
My father took newwater connection for my house use and i am BPL RATION CARD holder, , , 57 cm connection we spend 19000 rs to contractor for one day work as the order of water authority irinjalakuda, 1026 rs in water authority department i paid (approximately they gave totel amount of bill 20080 rs)again 6728rs estimate bill they given when the time off meter fixing time, now they told we are not under BPL scheme and at least 10 times l went water authority to move the paper and it took more than 2 months, and always we informd the all departments we are BPL card holder.
Please clarify our doubt about the money they took from us and why They not include us in the BPL category even they took Ration card copy from us.
Thank you
Ancy Antony vithayathil