Kent RO — after repeated complaint kent ro not replaced

Address:

H.No-657 Sarswati Vihar, Chakkarpur,, 122002

Respected sir,

I purchased kent ro kent ro model-11001 sl. No-kr[protected] bill-079374 dated 09 feb 2019. The kent ro is totally defective for which i complained 6 times in 2 months to replace the defective ro. Everytime the come and repair & after 2 -3 days again it stops filtering water. The same is in warrenty.
Now customer care replied they cannot replace the complete set.
I request your honour to kindly take some action to get rid from this problem.