Airtel — bad customer service by manager

Address:

Airtel Basaveshwarnagar branch bangalore

This is with regards to my visit to the basveshwarnagar airtel office for a replacement sim card ([protected]) i would like to raise a complaint against the manager by the name of raghav.
I
I was asked to provide an alternative number for getting an otp n i said i don't have an alternative number.. When he was not willing to help me i said the airtel service was third class s and he says to me i am third class. There is no mention of a customer to have a replacement sim customer needs to provide an alternate number : as per your procedure it says :
What should i do when i see the words 'sim card rejected' or 'blocked card' or 'check operator services'?
In any such scenario, please visit one of our airtel outlets with a copy of your photo id proof, proof of address and passport size photo. You will be provided a new sim on submission of these documents. Your new sim will be activated within 4 hours..