[Resolved]  Flipkart — buyback fraud

Address:	North Goa, Goa, 403401
Website:	Flipkart

So as per big billion day offer from the giant company "flipkart" samsung galaxy s8 is available for a price of rs 29, 990/-. And has a exchange offer too.
When i go to exchange my phone bought from flipkart the previous year that is october 29th 2017, still 1 year not completed. I purchased this product with buy back guarantee from flipkart.
Everything goes fine if i don't exchange my old device.. It takes me directly to the payments page.
But when i add my phone as exchange (10500 value is given as exchange discount as mentioned at the time of buying.)
Now when i go to place the order it says out of stock.
They are cheating people.
I talked to customer care for nearly an hour, tried every possible way they told me to do.
Finally with disappointment i left the call and feel hopeless about flipkart.
I want to file a complaint on flipkart for wasting my time and giving misleading ads and cheating customers about buy back guarantee..
I also faced an error (Abb not enabled on your account.)