Is there a service similar to ShapeShift that makes it super easy to exchange your BTC to a working Credit Card number that you can instantly use to make a payment online? No physical cards. Just for online use.
debit card = banking system [If you do not wish to verify your account "ID & proof of address" or your country not supported, you will waste your time.]
online use = Virtual cards
There are many of these cards "Most of it doesnt work in the United States," I have tried some in the past, but I do not know if they work so far.
you can try this list [1] or this[2]
Do not trust the recommendations in these lists and do your research.
[1]
List of bitcoin debit cards[2]
A Complete List Of Bitcoin Debit Cards For 2018