Eureka Forbes — annual maintenance service

I have paid 5000/- for water purifier amc on june 3rd and till now no service person turned up to replace water filters. It's been more than a month and reaching eureka forbes on multiple channels (Phone/service requests) but no use at all.

Can someone take an action or refund my money including the water purifier amount as there is no point o[censored]sing this water purifier as it shows water filters need to be changed. Eureka forbes had literally chased on the phone to pay the amc amount and now they have no interest to change the filters.