Bajaj Electricals - Water Heater — Lack of action inspite of filing complaint

I am a consumer from Kolkata who has purchased 2 Bajaj water heaters in april 2007. I am writing to here in sheer desperation, after getting absolutely no help or support from their kolkata service centres.

I have lodged a complaint (NOT my first, in the last year and a half) last on 1st of october 2008 for BOTH of my heaters - complaint number 3238 with your Bajaj Care centre in south kolkata. One is a storage heater 15L and the other is an instant one 5L. The first inspection happened promptly within a week when ur engineer came and diagnosed the problem and said someone will come in the next one week to replace a certain part of the geyser. After about ONE MONTH, around mid november one of the geysers was partially fixed with the replacement part. however, the part thatw as replaced is still lying in my house as the person could not carry it back with him (dont know why).

the other geyser has not been fixed till date!! i have repeatedly called our local Bajaj Care centre at[protected] and spoke innumerable times to the representative Ms munmun who has assured me each time that the person will come in the next 2 days, but has obviously not turned up. please also note that the said number of bajaj care is more than half the time "not available" or "line is busy"...it has now become a part of my daily routine to once try the number and not get any response!!
not only do my calls go unanswered, but noone has the courtesy to call me back to apprise me of the state of my complaint.

i am absolutely at my wits end as to what action to take. please note that it is the hard-earned money of consumers that is spent in investing in reputed brands such as Bajaj and if this is the kind of post-sales service we get, what are we paying for?!??!