Customers took to Twitter to vent their anger after many were unable to withdraw cash or transfer money online.
NatWest customer Mark Hillman had planned an evening out last night, but it was cut short when he was unable to withdraw any cash.
He said: "I went from a night out to staying in, because I couldn't get my hands on my cash."
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Mayor Joe Anderson has been working closely with former professional boxer and now mayor of Kiev Vitali Klitschko to sort the situation.
Martin Johnson will appear at Sheffield Magistrates’ Court on Friday.
Health Secretary Jeremy Hunt spoke at the launch of a report which says the health service needs funding increases of 4% a year over the nex