So irritated with Nedbank Greenback service

I was issued a new cheque card that was not linked to my greenbacks(Incompetency of a teller at the branch) and I subsequently forfeited my accumulated points that are worth more than R3000 now they can't reinstate my points and backdate my accumulated points from Feb when I was issued a new card. Now even the backoffice of Nedbank can't fix this problem it's now 5weeks I've been calling and not getting any help. They keep on telling me about the technical team that can't resolve the issue. It's so annoying because I've accumulated these points for a reason and now I can't use them.