Can't Find discount code

Hello

Is there any way to retrieve the discount code I recieved from the gifts? Because the first item i bought, i used the code and the currency needed changed but it still took away the full amount ( was 27, changed to 22, but still took 27)

So i assumed the thing is broken. I got info that they will fix it so i wanted to use the code on my second item but now i cant seem to find the code anywhere on my account page. If there is a way to get it please tell me, i would really appreciate it.

If there aint a way its really horrible work done and a real dissapointment towards the staff.