Philips India — sound system dsp470u

Address:

110085

Dear sir
i have purchased a home theater / sound system DSP470U in the year 2014.
in oct 2015 the remote of the system stopped working . your customer care deptt advised me to get new remote of system from dizitek service authorised philips service center G-17/16 sector 15 rohini delhi 110085..
on 3/10/2015 i have purchased a new remote of system from your authorised centre rohini at a cost of rs 150/-
now in aug 2017 the new remote is stopped working I again approach your rohini service centre for a new remote, they issue me remote at a price of rs 480/- when i asked for a price hike .. they inform me that the price is gone up due to GST .. but they have issued bill of remote without mention of gst no and without warranty..
pl look into matter and inform me REASON OF HIKE IN PRICE OF REMOTE .. IS IT IS DUE TO GST ? and the actual price of the remote and why they have issued me bill without having GST NO ..
IMAGE OF BILLS ARE ENCLOSED HEREWITH
Regards
GAGAN KUMAR BHILWARA
MOBILE NO [protected] AND [protected]
EMAILID:- [protected]@gmail.com