Contracted phone blacklisted without reason

Cell C reference *** / SAMSUNG I9300 (Blue in colour). I Doctor Matime Mohlala( ID *** ) hereby declare that I have a contract phone with CELL- C asof August 2013, with no issues at all until the end June 2015 when I started experiencing signal issues where I received an error message 'network not registered'. The network would be on and off during the day. I have never reported this phone lost/ ****** ever since and or took it in for any service.<br> On the 10th July 2015 I decided to take my phone in for service at CELL C @ The Grove (PRE643363). I was informed by the Repairs Offices of CELL C that the phone I have been using for 23 months is blacklisted due to lost/****** as the EMEI on the label differs from the EMEI on the mainboard? <br> So my concern is that I was given a lost/****** phone by CELL C which I have been paying for 23 months? I can confirm that the phone has been in my possession for the past 23 months without any issues or given to somebody for any use and this is the first time that I gave this phone in for service. <br> I therefore request CELL - C to unblock and give my phone back.<br>