Bajaj Electricals — pathetic services of geyser

After so much follow ups i got the geyser fixed 2 months back and it has again gone down.
Yesterday a technician came and started speaking to my wife and kid in a very unpleasant tone. He was asking us that we have to first take out half bucket water everytime we turn geyser on. I have never used such kind of geyser.
Plus this guy was talking in a very nasty tone. Bajaj guys this is not acceptable. I am worried about my security now.in 2 months the geyser you had put up gone down. Is this how it works. I have separate mail trail going with you.
Gc si no 0533104