Telkom Billing

I would like to lay a complaint.

I've been always using Telkom if I am correct from 2015 and not even once I had a problem with them. This year in January I was offered an LTE device I took it and it was delivered to my place I saw that it was not going to work for me I returned it in weeks time it was re collected I was debited end of the month an amount of R966 I reversed the R566 cause the device was already with you I contacted Telkom and I was told that am supposed to send a waybill with a cancellation letter that was in February and I got an sms that they are attending on it but it was never cancelled so I had to leave with the life of reversing every time on whose expence if they can check my profile I pay every month and even if am reversing what I know am suppose to pay am depositing April they deducted R3235.15 and I reversed it and the difference that am suppose to pay only yesterday my Data was paused and when I called Telkom they told me there is no escalation nor cancellation is done on my account where as I sent everything even the waybill I sent them long time ago I am not going to pay Telkom anything either than the R279.00 of the OPPO phone and R59.00 which I know I owe. If you want me to send you the invoices from End Jan to April I will.

I am coming to you cause I don't know what I really need to do now I tried all angles to be assisted.