Vox Samsung promotion is a Money making ****

I have Purchased a Samsung Tv from FNB, the TV came with a R5000 vox telecom voucher. I have activated this service within the required time but have not been using it. The service is valid for 12 Months. Vox has cancelled my service and refuses to re-activate it due to technicalities, This is a great way for Vox Telecom to make lots of money at the expense of their customers