What is happening?!

I went onto the smarty website a couple days ago. Ordered my sim, set up my plan and requested a pac code from the old provider which I then put into the smarty website as it asked for the pac code. I then set up an account on smarty and I’ve had my sim delivered today. Problem is it’s saying awaiting number on the main dashboard and I’ve just had an email saying a replacement sim is on the way…I didn’t order a replacement sim?! I only got my new smarty sim through the post today. So 1. How do I activate if it’s not giving me the option to and 2. Which sim do i activate? The one I have or the replacement sim I never even ordered? 

so confused!