No voyager miles after 3 years

I have had my voyager credit card for over 3 years. When I got the card I was informed that the link to voyager in order to receive voyager miles would automatically be done. Had make some purchases and checking my voyager mile balance i found i was not getting any miles. Contacted voyager they said contact nedbank, they then said there was a system fault and that they would resolve it. I have for the last two still been trying to get this issue resolved and i am still not linked according to voyager and no seems to be able to help me. All the while i am still being charged for the voyager fee and am receiving no benefit. it is unacceptable that this has not been resolved and furthermore i have lost all the miles i would have received so far.