Mtn zakhelefuthi futhi share

We bought Mtn zakhelefuthi shares in 2016 and now i can't get my dividends or sell my share because I've change the number that i was using i 2016 since August 26 I've been trying to sort this thing they say i must go to nedbank and change the number and nedbank says i must take a loan before they change my cell number so now im stuck and sick and tired of this thing all i want is my number i have reference number from mtn the told me yesterday he will escalate the matter to his superiors references number is ***9 Mohlalesi Thebehli