Pureit / Hindustan Unilever — Charged for parts under warranty

I purchased my RO water purifier from Vijay Sales on 29/05/2023. Just after 6 months it starts showing an indication that you need to change the Sediment filter. I contacted customer care and then came to know I needed to for the consumable part and service charges also, it's totally unacceptable that consumers need to pay under warranty. PureIt should stop giving warranty.