Ukpostbox.com scammed me how can i complain staying overseas ?

Usually i am a fan of quality under garments .And i buy if it is beautiful. Last monday .On the newyear occasion i bought a nice set of Panty and Bra from uk. and i registered also in ukpostbox.com to get it forwarded to me without any problem. They were theif i did not know they scammed my Bra and Panty set . They said nothing came on my name but from shop i have received proof of the delivery and some one called allan chester received it. shameless thieves even dont feel ashamed to steal someone's bra and panty set. www.ukpostbox.com is a scam please avoid them. and anyone please let me know how can i file a case against that thief allan chester . it seems hard because i live in thailand. please anyone suggest. thanks