MTN telling me my handset cannot be blacklisted

<p>I got an MTN handset from Edgars in September this year. I also used an MTN sim card inside the phone. On the 16th the handset was ****** and when I called MTN I was told that my handset was not registered on the MTN network and as a result it could not be blacklisted. MTN I need the following answers:</p> <p>1. How is it that you can't pick up my handset which was an MTN one? I need this phone blacklisted so that I can claim for insurance.</p> <p> </p> <p>I am at this point being very much inconvenienced.</p>