Yeah, I really doubt that would be issue for more than few days, any source to this wild claim?
Only thing I could find is that foreign cards might not work in some online payments or mobile payments, which is quite normal everywhere in world, but giving bold statement that your foreign card is useless and you can't even withdraw money from ATM seems like spreading fake news.
https://atadistance.net/2022/09/19/foreign-visa-cards-blocke...