I've the same problem. They didn't call me before they come. They insisted to receive HK$ ONLY!!!! As they didn't call me, I was unable to confirm with them whether the messenger would collect RMB or NOT!!!!
But its seem that the name of the Courier Co. 國通 is still the same!!!
BTW, I still have a $50 coupon for purchase $200 on DD (expire on 25 Mar) . If you need to order books, you may PM me the information and books that you need.