VUMA SADV

My word I have been trying to make a payment with my new card details for the past 4 months yet I cant, I have sent wats up messages and cant get assistance I'm so ****ed off I need it so much cant do my work at home why is it so difficult to make payment with a new card, I don't use capitec anymore agent told me once it needs to be that account I cant change banking details what must I do.