Esn code cash issue

Hello Guys, today i bought 2400 ESN code via Shattered Crystal, after that i went to my knight online account to recharge that 2400 ESN CASH but it only gave me 2000 CASH please can you help me with this issue?
Server: Atlantis
Acoount: IIIAtenaIII

thanks !

please send a ticket to the customer support

support -> submit a ticket -> nttgame (ntt portal) -> billing