mobile issue

&lt;p&gt;&lt;b&gt;Location/place&lt;/b&gt;: shobhapur.betul. m.p&lt;/p&gt;<p><b>Name of company/service</b>: sony ericsson </p>I have submitted my mobile phone at sony ericsson service centre in the month of september 2012 and also paid the bill in advance for repairing my mobile phone but till now they not given my phone back what to do??????