Eureka Forbes — No service being provided for water purifier

I purchased EUREKA FORBES WP AQUASURE A-ST in the month of October, 2022. However, till date no service is provided. I have issues in the water purifier, as there is hot water coming and at times the acquaguard is not working. In this regard, compliants have been lodged several times but till date no response. Also, compliant was made to the customer care BUT no response to it. IT IS DISGUSTING THAT NO SERVICE IS PROVIDED IN SIX MONTHS AND ALSO NO RESPONSE TO THE COMPLAINTS MADE. MY PRODUCT IS YET IN WARRANTY PERIOD.
KINDLY LOOK INTO THE MATTER AT THE EARLIEST.