Indraprastha Gas Limited [IGL] — Incorrect bill generated:[protected]

For BP number [protected] incorrect bill is generated from last two times. request you to send someone at my flat take reading of the meter and correct my bill. Also adjust my extra paid money to the correct bill. how it is possible when gas was in use bill was 200-300 now without use and without taking reading from my meter you people are generating 1500 for a month. Correct my bill on high priority and regenerate the bill amount on my number