I tried to use my Chase MP Visa to upgrade to the platinum version of the KVS software, and it wouldn't go thru initially.

While I was still online trying to send $$ a second time, my phone rings.
It is the Chase anti-fraud squad, wanting to verify that I really was trying to use my card on this website.^

I confirmed that it was a valid purchase that I wanted to make and the transaction went thru a few moments later.

I was very pleased that they were this proactive.

ymmv.