Incorrect package

Had my explorer installed with the incorrect package loaded. I requested the compact price lock R529 package and the full pack for R899 was vetted.I called the contact centre on the day of activation to inform them of the error on the 4 March 2016 I was assured the error would be rectified. I called again a week later and was told to enjoy the full pack but the correct amount of R529 will be billed. My account was incorrectly billed. I called again yesterday and Sibongile assured me she's working on it & will call me bk. I am still waiting, there's no contact to this department. I have suggested they listen to the initial recording and still no response . I have made numerous calls to the contact centre which is costing me. I cannot even begin to explain the frustration.