Telkom mis-management !!!

On the 14-01 2015 I gave Telkom 30days notice to terminate my land-line account ***). Account no.***. It was terminated on 14-02-2015, but I still was getting invoiced each month until June. I visited their Witbank branch to try to resolve this on two occasions. I paid for all my calls & a pro-rata amount for rental for March 2015, but I was charged for the full month. This resulted in Telkom adding interest on an amount I did not owe. I received sms's to phone a Cape Town no. which I did to sort it out & threatening me with hand-over to lawyers. Another sms to phone 10212 which I did at my expense. They promised to come back to me within 9days, but that was over two weeks ago. I have come up against total incompetence with everyone I have dealt with at Telkom. They cannot get their accounts in order. Then they resort to bullying tactics to ****** money that is not owed to them.