Telkom cancellation

Received a Telkom LTE Router that used 100g of data in 1 week, was advised by Telkom that this would not happen, cancelled contract on 2/12/15 , Sent a Consumer Request for Service Cancellation in to them 2/12/15 and received ref ***5, phoned to follow up, Telkom call centre said they will cancel the contract, followed up on 19/12/2015 call centre said Bianca at Retentions is doing the cancellation can phone her directly, followed up again in Jan 2016, still handling the cancelation. Received a phone call from Arnold wanting to know why i want to cancel, I explained the reason he said he will cancel the contract immediately, I spesifically asked when the payments will stop, he confirmed last d/o will be beginning of March and then it is cancelled. Received a inv for payment to be made again. Phoned call centre and Maxine phoned back now stating that I have to pay a termination fee of R5,018.25 and I cannot return the router to them. Never before was this mentioned by Telkom, I have paid the monthly fee for 3 months for a serviced never used. Requested to speak to supervisor Thulani that said he cannot do anything and I need to pay the termination fee, Unacceptable.