Poor communication

I have been trying to get my services cancelled now for almost 2 weeks, i opened 2 data contracts 10GB deals was told upon sign up that we can port our existing number from MTN to telkom. Since point of sign up i have been having endless problems with porting I've spoken to numerous people and have even been into a store only to be given the run around. Now that i have requested to cancel they cannot even call me back but want to charge me for a service that i have not even gotten.