Alliance — Misbehaviour of a receptionist at local recharge center

Address:

Kolkata, West Bengal, 700037

I've just visited my loacl rechage center to recharge my monthly internet servie
One of the receptionist
He asked my "customer id number"
I said that as i couldn't remember the number (This number is not ever had been forced by your service to memorise while recharging, and everytime i ask them if they could serach my user id, so usually i say my name & they do it)
O can you please search my name?
He replied "i wont"
I stated that it wouldn't be a big deal just to search right? Coz the other guy does it everytime without complaining
He again replied "i don't care about the other guy, i personally won't do it"
I was shocked and asked if there is any other way coz i don't hold any documents that shows me my customer id
He said "no"
I got pissed off a bit and said "why such rude behavior man, how am i supposed to recharge then?"
He said "you need 'customer id' or 'user id' (Which he had not mentioned in the first place)
Then i stated my"customer id"
And after giving that id he then asked my 'name'

What kind of misbehavior is this, and trust me his voice was loud enough to show the insult to the guy standing opposite to him asking for service

I want to make a complain, against that service center, what else i need to make the complain?