Worst experience with MTN Customer Care Centre

<p>My contract with MTN was due for a renewal however i requested it to be cancelled. I contacted the Customer Service Centre and we cancelled over the phone. I called again to follow up if it was done and the customer service lady informed me it was not done yet so we had to recancel again as a result it got blacklisted because MTN thought it was lost. Please note that I did not report it as lost. Now I cannot use my sim card with my "blacklisted phone" and I have sent MTN supervisors all documents to prove that the phone is not lost, it is still in my possession but somehow they are sending me from pillar to post. </p> <p> </p> <p>Please I just need my phone to work. </p>