BAD SERVICE IF THEY CANT ASSIST THE CLIENTS INSTORE!!!!

Took time from work to go there to change my number. Only to found out that Refilwe at Secunda branch can’t assist ME due to sms system is off. I said to her that I CAN'T COME IN AGAIN. She wrote my cell number my account number and initials down and said she will phone AND ASSIST me as soon as the system is online. I received the 6 digit number on 11:52am 31 August 2017 and phone the branch to help me i spoke to Refilwe again and suddenly she couldn't help me. So i decide to phone the help line ***they was able to assist me ask me for my account number and the 6 digit number. He told me that he can assist but suddenly there is a error on account to change my details. I phoned the branch in Secunda again spoke to Refilwe AGAIN explain to her and said i must wait for manageress Pentunia or Petrishia (WHEN I ASKED HER NAME AGAIN TO TELL HER I AM GOING TO HELLOPETER SHE REFUSE TO GIVE HER NAME)explain the whole story and she can’t assist me with bad attitude. I asked her why did Refilwe took my account number then if she knew that she can’t assist me over the phone????????/????? What can i do???????????????? This is very bad service. Now i must took time off from work to go there AGAIN??? and now all off the sudden sorry they all just make a fault but how experienced are your workers then if they make this fault twice?????????????????????????????????????????