Brought the A/c unit a year back, we have four service free when we bought it. Till date only twice they have serviced the A/C for free service. Yesterday they serviced it, yet I they didnt properly clean the machine. They serviced for less than 15 minutes and left. Please guide me to taken proper action against these organistation. I have photos of the machine after service

Still there are dust particles around the machine and they clean it properly

To do the service and proper information to be shared.

Complainant Information
name- danielhere