Problems with customs

I tried to import some denim items from China. I found this website online that were selling wholesale items. The website stated that all items were 100% authentic. The company even said the can probide paperworks. I was always trying to buy wholesale designer clothing and the good price, so I was very eager to receive my sample shippment. However, I just got a called from UPS customs stating the my goods have been held for inspection. I’m very worried now, since I don’t want to loose my wholesale license. Does anybody have any advice or tips? What should I say to the customs officials? I have to go and meet the customs agent handling my shippment. Any helpt would be appreciated since I"m very worried about the whole situation!