Flipkart — I am complaining about Installation of Washing machine

I ordered whirlpool fully automatic washing machine and got delivered on 13.10.2021 and on the same day technician called and told I will cancel your installation and demo service due to wrong pin code address, how is it possible if machine reached on given address. After that I have complaint many times even every day but issue not resolved till date. Now no one is responding because return policy date ends. They cheated me very badly. I have recodings how they treated me, every time they kept me waiting on calls for hours. I have all proofs.