Billing issues

11/2014 I cancelled a 1GB bundle on a MTN contract. The bundle was received and paid for even though cancelled.<br> <br> 12/2014 I cancelled the same 1GB bundle. The bundle was received and paid for.<br> <br> 05/01/2015 I queried the 1GB bundle being billed, but not received. A reference number was provided (ref nr ***)<br> <br> 11/02/2015 I queried the 1GB bundle being billed, but not received. A reference number for the query was provided plus the previous reference number was escalated to the Billing Dept.<br> <br> 27/02/2015 the line was suspended due to the credit limit being reached. This credit limit was reached due to the 1GB bundle still being billed for plus being there twice according to MTN active when I logged in. The line was unsuspended and a reference number provided. I was told to wait until 03/03/2015 to log an issue regarding the billing as an unbilled product can not be queried.<br> <br> 04/03/2015 I called the call centre and was re-assured that the 1GB bundle is de-activated and that the account will be only R100. As so many times before.<br> <br> How do I get these billing issues resolved? I have reference nrs, but no action and I keep paying.<br> <br> Poor poor customer service.