Billed after cancelation.

So here's the issues before I left South Africa I canceled my telkom. I was told it was approved and everything. Yet here we are another debit order. I ask you how am I going to resolve this as I now live in Indonesia. Please explain this to me ...... I canceled online on my account. How am I billed again? Please tell me this. Please sort this out and refund my money. This is pathetic. Please make contact via email as you can't phone me I no longer live in South Africa. Thank you . Hope to hear from you shortly.