[Resolved]  Pureit / Hindustan Unilever — I am complaining about change in service

I took my pureit to+ uv set in 07/2017 and as per requirement changed the gkk on 06/18 while i had to spend rs 2695 and as per the list one spare set of presediment filter was given to me which was subsequently changed as per the standard... Today when i changed the gkk, i was not given that spare set of presediment filter and was told that i will have to purchase it at an additional cost of rs 250 when need arise. Also a new charge of rs 300 being charged as delivery charge which was not there in earlier change neither it was told at the time of purchase. This is a deviation from the service process (Delivery charge) and also a short supply against a defined product (Spare presediment filter not provided)
I am