You can't pay to any Russian bank using SWIFT, Wise, Payoneer, Paxum, and probably any other MC/WU/Amex/Visa powered platforms, since recently. Other than that - no.
Not "any Russian bank". Of course it's possible that in future all Russian banks will be under sanctions.
Right now even bank transfers between Russia and Ukraine works fine. My ex-girlfriend still has a way to support her parents in Kyiv.
If you meant possibility of total blockade: it's probable.
Zelensky campaigns exactly for that.
At least his ideas more realistic than Macron voiced: to block bitcoins in Russia.