Telkom not providing proper service - YET AGAIN!

Hello I cancelled my telkom line end of October 2017 to be effective from 26 November 2017. After settling the November account, I still received an account for December and January. I have sent numerous emails to the accounting and line cancellation departments. I was contacted by a Katishi Victor Selowa from telkom on 18 December, who promised to sort it all out and to reverse the incorrect accounts. Needless to say it has not been done yet, as I have received another notification from telkom regarding outstanding account!