Eureka Forbes — Replaced damaged TFC membrane 3months back

Address:

D111, Confident Atik, Sompura Gate,Sarjapura

On nov 1st week 2022 Technician from euraka forbes came via service request and replaced the TFC membrane as part of AMC service request . In 3months my TFC membrane stopped working
now i am out of AMC period and they say all requests are chargable
how can it be the new membrane works for only 3months . Mine is a small family and water consumption is less as we buy bisleri water cans for drinking purpose and only cooking purpose we use filter water.

Product: AQUAGUARD ENHANCE RO+UV+UF Water purifier system
Product number : [protected]