Xiaomi India — mi a2 phone

I ordered mi a2 phone on june 4, 2020 via flipkart and it was delivered on june 8, 2020. It started showing issues within 20 days. I could not return it due to 7 day return policy of flipkart. I took it to service center of sawaimadhopur, rajasthan, they told that the phone was activated in 2019, i. E, one year back and told that it crossed the warranty period. They refused to service the phone. It's highly unprofessional thing by mi.
I could not return it and it's still not working.
I raised a complaint with flipkart also. They are also neglecting the isse from last 10 days.
I am highly disappointed with mi and flipkart and will never recommend anyone to go with mi and flipkart.