Crompton Greaves / Cgglobal.com — Service providing issue

I bought a geyser from crompton. I was to get it installed the next day. The technician visited my doorstep. But as it was morning time the washroom was engaged. As it is a household. People can't expect to available all the time. I asked him to wait for some time after that he vanished. I called the person he told me he would come that day in evening. I waited for the entire day. He didn't come. I stopped recieving my call. After that i was give a contact number through which i would be recieving assistance if any issues faced. Yet no response from the concerned person. I got a call the next day regarding installation . But even that guy didn't come up. This is so frustrating. During winters, we've been suffering even after purchasing tge product cuz of it's service. The service is pathetic. It causes mental exhaustion, kills our crucial time, leaves us unattended. This is realy frustrating.
I won't the relief now. So i would request my issue to be resolved. Hence, im takimg the help of this platform.