Deactivate my number permanently ***

Can i kindly be assisted regarding deactivating my number *** permanently i spoke to nelisiwe from social media and she advised me to call 084135 and i did and spoke to ntokozo who couldn't assist and said i must go to the branch, to be honest i cant to the branch due to my working days and hours, can i be sent a email address of the person who can assist me so i can send that person all the requirements documents, nelisiwe i do appreciate your help it was quick and efficient, you kept me update i give you 100% good service wish all the clients can be assisted by you,