Sony India — PS4 500GB sold on price of 1TB.

Address:

560085

The issue is:
I bought 1 PS4 1TB variant and paid 34, 999 INR, but when I opened, connected to screen, came to know that it has only 500GB hard disc.
I reported this issue to service centre back in January, I am providing you the job number J70193677.

The service centre person told that they could not do anything regarding this.
I went to dealer also, the dealer is : Adishwar India Limited, Bangalore. Please refer Attachment for more details.
I went on to social media (twitter) also, I have attached the image as well.
I've attached some photos:
screenshot of system storage status of PS4.
photo of bill receipt.

Now this I reported back in January, but still not got any assistance.

But till date they have not resolved this issue, and are delaying the matter.
I've called customer care 6 times, they always promise that i'll get call from management next day or so.
I am very much disappointed with their way of dealing with customers.