iTunes Store: Credit Card Declined - Bank: No, it's not. ???

I am currently unable to purchase items from the iTunes Store. I receive an error message saying that my credit card was declined. Thing is, I was able to purchase music from the iTunes Store last night, and I was able to purchase a movie from the iTunes Store this morning. But now, I am unable to purchase anything.

I first noticed this issue when I attempted to upgrade my iCloud storage. I also attempted to purchase a random music single from iTunes to confirm, and receive the same error message.

I have contacted my bank to check on the status of my card, and my bank confirms that it is not declined.

I've reached out to iTunes support via email.

Anyone else having this issue?

Thanks!