I purchased a split AC of Hitachi on January 30, 2011 and in the last week of April, 2011 I first thought of using it. I discovered that the AC is not cooling. I called up the service center at Delhi (011-[protected]) and was told that it would be attended to in 48 hours. An engineer came the very next day and said that there is a leak and the gas inside has escaped. The leak needs to be fixed and gas re-filled. Since then, no body has come to fix it. Every time I call up the service center (which is very difficult to get through) I am told that it would be attended to on the day or the next day. But, it is over one week of follow up in vein. I asked them to let me know the escallation path and also called up the corporate office in Ahmedabad but with no respite. Any help to resolve the issue will be greately appreciated.