Telkom contract (bad service)

I asked Telkom to cancel my cellphone contract as it has come to an end and instead they cancelled my router contract which was 10 months old . I called them to rectify this error and they agreed that this was an error on their part. My router contract was cancelled on the 3rd of November and every time I call them they inform that they will escalate the matter to the cancellations department in order for them to reinstate my router contract. I went to the store to see if they can help me and they told me that there is nothing they can do. They also told that because my contract was only 10 months old I will be charged cancellation fees. I did not enjoy the the WiFi router service for the month and I have paid for them already. I hoping to be reimbursed for this month and for the cancellation fees to be reversed.