NatWest has confirmed determination are issues with its currency deposit machines aft customers reported wealth was missing from their accounts.
Several radical connected X, formerly known arsenic Twitter, said that recently-deposited currency was not showing up successful their balance.
Others said they had gone overdrawn arsenic a effect and expressed interest that they would beryllium charged fees.
The BBC has contacted NatWest for much information.
It is presently unclear erstwhile the contented started oregon however galore radical person been affected.
NatWest has been replying to customers individually connected societal media acknowledging a method problem.
The slope archetypal said connected X connected Thursday greeting that determination was an "ongoing incidental with our currency deposit machines" and that its squad was "working to resoluteness this arsenic a substance of urgency".
Shortly after, it said it was "anticipated that each transactions volition erstwhile again beryllium disposable time [Friday] morning", though successful a station precocious connected Thursday day it said it was "unable to corroborate a timescale" for erstwhile the contented would beryllium fixed.
It is not wide whether the occupation remains unresolved.
One lawsuit contacted the BBC to accidental they had flown to Croatia lone to find that they had nary wealth successful their account.
Another posted to NatWest connected X saying: "I'm present £900 successful my overdraft. I enactment £1000 successful connected Tuesday day and it's gone? Also we amended not beryllium getting overdraft fees origin of your strategy failed."
The slope told different idiosyncratic that balances would beryllium corrected erstwhile the contented was resolved, adding that if they had gone overdrawn due to the fact that of the contented and saw immoderate charges applied to their relationship past they should interaction lawsuit services.