HP India — Hp store in nellore - order booked but no stock - advance amt not refunding

We have approached hp store at nellore and ordered for one hp laptop
On[protected] and hp manager. Mr deepak told to deliver by[protected] and taken advanceof rs1975/- and not delivered on ime and told no stock now at co and promised in a week and like that postponed upto may2016 and we fed up with his actions we telephoned him to cancel
The order and ordered on online and got delivery on 2-6-2016 and
Requested for rfund amt but he is not willing to return

Pl. Help us in this regard and advise him to refund order placed
In the name of my son j vn m chaitanya bill no.1761dt.[protected]
At nellore hp store their office ph nos[protected] and [protected]
And mailadd:[protected]@india.com