Google — pixel 2

Address:	560043
Website:	store.google.com/in

I bought a pixel 2 phone from croma store bangalore on dec 10th. I was suppose to get a vr at the time of purchase but due to no stock, google event manager rasika promised me to get it by a week. Till now i haven't received it and i'm trying to contact her everyday but no response from her. I am not expecting this from google. Where should i complain?