The Mobile Store — Regarding false information at the selling time

Address:

Chandrapura bokaro jharkhand

I bought a smartphone of 12k in Bablu Mobile, Chandrapura(Bokaro, jharkhand)
At the time of buying he just compare every other phone quality with vivo y20a, but after i bought it and go back to home and see the quality, it was not upto the mark as told by the seller.
Then just after buying i again went to the shop and complaint about the feature he told me at the time of buying, he just completely changed his explaination, by stating that he is not comparing with the other phones, he is just compring with normal cheap phones ..
And when i ask for exchange or return, he just asks for about more than 2000 amount to exchange it with another mobile ..
He just completly ignored us. And just laugh and laugh and say i dont take return