I have 6 of their VRV Acs installed and despite multiple emails to them and phone calls from them, their authorised persons do not turn up for service. Such equipments involve a fair amount of money to buy and install and it is irresponsible and callous on the part of these companies to not service products sold by them. It is also environmentally bad. It seems only a case in the consumer court and claim for damages will make them see reason.