BSNL Broadband
Ehaviour of official

I have received BB bill for month Oct 09, in which they give me excess charges. I complain to all official but no body response me. One day I meet to DGM (finance) he is a nice person he entertain my complain .he immodestly correct my bill and write actual amount on bill as well as counter file I deposit the same. But next month the BSNL official again gives excess bill and denies the correction of his DGM.