Charged again after I cancelled the services

I have cancelled my Telkom services on the 1st of December. I was told it would take 20 days for the service to be cancelled, but I got a bill end of December and again in January. Telkom was supposed to contact me to refund the money, instead they send me more bills. My reference number is ***6 for the cancellations that was escalated but it looks like whomever it was escalated to is on extended do nothing.<br> <br> Please sort this out and refund the money!