Airtel installed broadband wifi with device(Trenda) for Rs 500 for whole society(GK lake view ananthpura main road Bengaluru) after giving discount of Rs 500. Later on they added 100 Rs every month for 5 months in the bill. Complaint has no reply. Be very careful with any postpaid connections. I had not opted for Aritel landline eventhough they added 100 Rs in first bill which they haven’t refunded.