如何让客户快点汇款 求对策！

是在网上找的一个新客户? ?发发信第二天要求报价? ?后来报价一个礼拜后??打电话过去询问??客人就说要订样品??挂完电话就邮件跟他确认了细节? ?后面就拖了3个礼拜说付款??一直没发水单过来??这周一的时候我跟进说我们已经把原材料回来了??让他确认是否要生产 他就回复thank you that is fine， 我继续回复：ok, would you pls offer me the bank receipt that you arranged, thanks. 他回复：i believe it will be paid this week. you can send the goods after you received the payment thank you 后面我就回复他 ok, thanks. our finacial department need the bank slip to confirm the payment is belong to which buyers, as our bank accout is received many remits in one day, so pls help to get the bank slip for me, ok? 然后就没有回复了，是要继续等待还是？？？？？