Depends what card it is.
If I can remember correctly one of the only cards I don't use on a day to day basis, or never used would be my amazon cc card..
But I will deffenetly give a call and explain how it was never worth it for me to use the card as I never had prime and now I have which would earn me as much as 5% vs the regular 2% for a non prime member.
We will see how that goes and RBH.