Eureka Forbes — Filter change and service not provided in water purifier AMC.

I purchased AMC for my water purifier.
for 2 years in January 2019 and one filter change and service was done immediately after the purchase. No other service was done after that. In Jan 2020, I got call for the filter change and it was scheduled. I planned my office hours late that day just for filter change but no one came even after long wait. There were few more calls later but no one came for filter change. Then covid lockdown happened and I got no calls after that. In Jan 2021 I again got call to service the purifier. I asked him about the filter change, I got to know the filter already has been changed on papers in Feb 2022. I never shared OTP but still they marked my service and filter change as completed. So I was looted for ~5000 rupees. since in 2 year AMC they all did was 1 filter change only.