"I had to probe him to get more information.
"When I rang again, they said there is a lot of skimming incidents at the moment," she said.
A Westpac spokeswoman said skimming issues affected customers from time-to-time.
She recommended Westpac customers travelling overseas contact the bank to notify them of their travel dates.
"We will then have an idea of what kind of transactions we can expect to see on their cards.
"Customers should also be vigilant and monitor their own statements for any transactions they don't recognise and contact us as soon as they detect anything unusual," she said.
Several people were charged by police after customers' bank card details were obtained through a skimming device attached to an ATM, the Fiji Times reported.
It reported foreign nationals were involved.
The director of the Financial Intelligence Unit, Razim Buksh, said there was an increase in the number of skimming cases since June 2015.
The last major and "carefully orchestrated" incident happened in December last year, which Mr Buksh said affected more than 500 credit and debit cardholders.