*****ulent 10% off for first time buyers online.

I placed an online order on the ToyRUs website for the first time today- as soon as I logged on , I got a big notification informing me that I will be given 10% off my purchase as first timer if I spend R500 or more. I even got a voucher number (1STTRUBUY) to use upon check out. When I was done shopping, I spend R669.80 and when I copied the voucher number from the clip board given in the beginning, I repeatedly got an error that the code is invalid. How can the code be invalid when I got it from you and used the clipboard you made available to copy and paste from. I am disappointed in that *****ulent offer and I find it deceptive and downright wrong that you would offer something that doesn't work. I feel ****** more than anything. Don't let this offer fool you guys, you will not benefit from it at the end !!!!