Airtel
Calling for dues

I have a post paid mobile connection since last three years with a good payment track. From last two or three months they are harrashing me by calling again and again to pay the dues before due date.

I m very sorry to say that I could not get my salary from last three months. But I have paid all the previous dues in time except last months dues of Rs.594/-

they are calling me in very odd hours, generally when i m driving for office or come back. their languages are ruthless. I have already complainted to their Nodal Officer but no result found yet.