Internet settings for Samsung Galaxy S6

Hi,<br> <br> I am unable to load internet settings on my Samsung galaxy S6. I called the call centre (first time) and I used the automatic reply instructions and dialled *123#. I received the settings and app**** them but I still could not access the internet. So I called the call centre again and chose the option to speak to a consultant. The consultant said that she was unable to help me and said I should call the data support department at ***. I called the number and it took me back to the 173 menu. I asked for a consultant again and she said that she will transfer me to the data support department. However I got an automatic reply saying that the number is incorrect and it automatically disconnected. I call again (fourth time) and explain my story, I am transferred to another consultant who grudgingly gives me the settings. I save the settings and restart my phone as directed but I am still unable to access the internet. I go back to the settings and my the phone has not accepted the settings and keeps going back to the MTN Data access point name. I am assuming that there is something wrong in the settings I was given. Please urgently assist.