Airtel Broadband Fraud by generating a monthly bill of 35K.

Well once i had airtel postpaid mobile conn i lost my mobile , iwent to nearest airtel office n asked for cancellationit didnt happen i kept gettin bills for 4months n totalled to 2k Rsthen airtel sent a lawyers notice.so my father who works in L&t sent a notice in response.after tht i never heard frm them haha.

whats the status noww?