breach of trust and false promises

&lt;p&gt;&lt;b&gt;Location/place&lt;/b&gt;: Jammu , Jammu and Kashmir&lt;/p&gt;<p><b>Name of company/service</b>: Sony</p>On April 2012 I bought a device from Sony. named Sony Ericsson xperia arc s
At that time it was written in the device box they it will get android 4.0 upgrade soon…but when I went to your service center on November 2012 I didn’t get my upgrade to 4.0 but I get an upgrade to 2.3.4
and now service center people told me that they dont know when update is goona come

I bought this device by seeing that It will going to get an upgrade to android 4.