Can't delete credit card

[daddio1230]

I have 2 credit cards on my account (in addition to my bank acct)

Two weeks ago I changed my primary (backup funding) card from one CC to the other.

Now I want to delete the other (no longer primary) card.

When I try to delete it, I get a Can't Do That message with the reason being there's an Instant Transfer in Pprogress.

This doesn't make sense.

Would appreciate any help on my problem.