Carrier Airconditioning & Refrigeration Ltd — Ac not work properly

carrier — Not providing service despite several requests

I had purchased an Carrier A/C (1.5 t tons) from Reliance mart 11 months back. I logged in a request at Carrier customer care for a service on 15th March 2011. I was promised that the request will be attended in 48 hours.
When i did not hear from them, I made a request again on 18th March, this time with a promise that someone woud attend to it in half an hour, but again no one from Carrier turned up. Annoyed with this, when I called up their Customer care number, their representative after would put me on hold for a minute. This wait would continue for 10 mins after which the call would get disconnected. This repeated for atleast 5 times.
Finally when I did get to speak to their representative, he informed that the service will be provided by Reliance Mart and they asked me to speak to Reliance thereby issuing a request no.
To my utter dismay, Reliance is the worst service provider. They gave me a committment that their person would attend to the problem in another one day's time and gave his contact number.
Now, the situation is that I have been frantically trying to reach that fellow who either promises to come (and doesn't turn up) or disconnects our call.
When we call Carrier customer care, they have the same repeated answer that they would get the issue resolved at the earliest which they never get done.
Tried I also wrote a grievance email to CARRIER which again has not been addressed till date.
I have realised that it was the biggest mistake of my life to have bought a carrier product.

Is anyone listening out there??