Flipkart — Defective product not pickup from 20 days

Hello team I purchase one plus nord ce 2 lite mobile phone from flipkart at 20 December
23 December product delivered I received defective product not switch on so i raised complaint 8 times return create by your concern team but all return cancelled by seller without any reason no one come for pickup
No any call received regarding pickup
Today 22 days already complete but issue not resolve
I already contact more then 50 times but all agent provide fake information daily
Very cheap service