Pathetic Service !!!!!!!!!!!!!!!

I have been asking them to sort out my billing for some time now. I took the VOIP option and ported my old number from Telkom. On 1 September, I upgraded from the 100 minute package to the 250 minutes package after asking if this would automatically overrid the 100 minute package. I was assured that it would. I have now received a second email to advise that my usage is now at 80%. The first was at 50%. I contacted the Billing Office on Monday and asked them to check and to let me know why I was not getting the Itemised Billing that is advertised as standard on their web site. I was then told that the 250 minutes was allocated to the original telephone number that was assigned to me and not the ported number. I asked them to sort this out as this is not the arranged account. I was informed that they would sort out. This morning I got the email re the 80% usage. Result - THEY HAVE DONE NOTHING!!!!!!!!!!!!!!!!!!!!!!!!! Useless as all they care about is getting the monthly fees paid BUT SERVICE ???????????????? NON EXISTENT !!!!!!!!!!!!!!!!