Maharaja Whiteline — I raised many complaints but they are cancelling.

I have purchased maharaja whiteline hybridcool 65 remote cooler on 21st april from filpkart.
after 10 days, its PCB got damaged. I have raised complain. one technician came and he did auto configured my cooler and told me that when new PCB came. I will change PCB.
After that I have raised so many complaints but technicians are cancelling again again.
i dont know what to do very bad experience I am facing.
Please help.

Compalint Numbers Which got cancelled.
1.SR No. LUC[protected]
2.SR NO. LUC[protected]
3.SR NO. LUC[protected]
4.SR NO. LUC[protected]
5.SR NO. LUC[protected]