Incompetence of staff members at head office

I have been trying to change my address for my Kulula.com credit card for nearly one year now. About six months ago I abandoned trying from sheer frustration. I started trying again in August.....I send an email requesting the address change and attached proof of ID and residence as requested. My ref number(one of them) is ***. I have been asked to go into a beach, which I did. They told me to open a FNB profile, which I did. Then they told me they couldn’t update my address as it was a Kulula card and I had to email again.... 2 hours wasted. I resent all my docs, today I received an email asking for my address....... it is clearly started in the original email and is printed on the rates bill attached. What more do I need to do to get this simple matter resolved! Dylan Dukas