INCORRECT SURNAME AND ADDRESS ON ACCOUNT

In January 2018 I request my address and surname to be corrected on my account that I received monthly. In February I request this again received a notification that this was done. I request a copy and had to ask for this 3 times. Today I received the copy and my surname is still incorrect and my street name do not even appear on the bill. I need to do fica at the bank and I want to open a extra bank account and have to wait for months for City of Tshwane to rectify my detail. I have send an email with all the correct information versus the wrong information, still the detail is incorrect. I just want my details to be fix as per my email and the information on my account profile on City of Tshwane.

How difficult is that?

Greetings Annalien