Airtel
Unnecessary charges

We cancelled our landline connection in April and cleared everything. We followed the procedure in doing so, submitted an application..cleared the dues and then our phone got disconnected.

Now starting next month, airtel guys have started calling us telling that we have 500 Rs outstanding.

i wrote a mail to them asking about the details and what it is about, they have replied back that we have 974 Rs. pending..i dont know what to do.

Please help