Cellphone Lost by MTN!

<p>My sister took out a contract on her name and bought me a cell phone as a gift in this year, first week of August i took my cell phone to MTN Table view to find out what was wrong with my Samsung S5 Mini. It did not want to find service connection. They then told me i should give in my cellphone because it's the sim card reader did not want to work. And they also said i should come in the next two weeks, eventually end August came and went to check how far my cellphone is. They told me my cell phone is blacklisted. i could not unerstand why my cellphone was blacklisted, mtn consultants then said my sister should get an affidavid saying my cellphone is not blacklisted and she did that. But my cellphone is still blacklisted. I then returned to the mtn store in table view and the paper work says it was returned to sender and was not repaired because it's blacklisted. But MY CELLPHONE WAS NEVER RETURNED TO ME! My sister blacklisted her ****** samsung which she has proof she blacklisted her proper samsung and not mine!... WHERE IS MY CELLPHONE!? PLEASE RETURN IT!!</p>