not enough money on your account - international call

[Jooyoung]

I just paid for an international call since I have to call Korea.

When I tried to call Korea "not enough money on your account" 

Please advise how to proceed, thank you.

#verizon support

[vzw_customer_support]

Hello, Jooyoung, hope you and your family are doing well.  We understand the importance of being able to make calls while on vacation, so you can stay in contact with family and friends.  Can you please send us a Private Message, so we can discuss? *Lisa