Atrocious Mtn Service , Accounts and Call Centre

My name is Candice Jacobs, I have a internet contract with Mtn , where they provide me with 5G Daytime and 5G Night Express. Since November 2014 till Jan '15 , they have only loaded my account with a total of 5G , and once I have used that , with no alert sms , I have been billed for using over my data limit. What happened to my other 5G ?? I have called 23 times to various numbers which make you hold for a MINIMUM of 15 minutes , then you speak to a consultant to no avail , nothing gets fixed or arranged !!! I have visited my local branch at hyde park , twice - no help , and I have visited headoffice in Fairlands - twice - still NOTHING !!! the last call I made the guy picked up that the problem was my 5G was not being loaded , but nothing done since at Accounts !! People wake up , this is not service , it is disgusting !Nobody lets me know what and if anything is being done . If I am not contacted within 2 weeks , I will be forced to contact my lawyer, for Mtn not supplying me what I'm paying for.<br>