Consumer exploitation and bad customer service

****mers of note with poor customer services. I cancelled my data package with telkom. The last invoice stated that the amount owed was R0.00 back in May. On the 15th of October I got a message saying that I owe R227.57 because they tried debiting R22.57 back in April and it was “unsuccessful” and all of a sudden without communication from Telkom I am being told I owe R227.57 and they won’t give me a cancellation letter until I pay this amount. What’s interesting is that they’re saying my contract was indeed cancelled but they’re still milking me for money!