Airtel — hello I am an airtel sim user I have a bill pending

Address:	New Delhi, Delhi, 110064
Website:	airtel

Hello i am an airtel sim user i have a bill pending.
Airtel collection person call at my wife number and talk very misbehave i told him please call me to my another number and talk to me he was talking very cheaply.
His mobile number is [protected].
I had call to 100 number and complaint him.

Is this the right way to call any customer?
I want airtel take action at him.

Kamal monga
From hari nagar, delhi-110064
Mob. No, [protected]