Please can someone give me some advice. MTN said they could not help. I went to purchase a pay as you go sim card today and was told that I had been blocked from getting another SIM card as I have 10 registered to my name. I am not sure how this is possible... but anyway... I have found 2 old SIM cards I no longer use. MTN said that they cant help me in store. How do you get SIM cards unregistered so that you can purchase another one? Any advice would be appreciated.