Unprocessed application TWICE!

I app**** via [URL Removed] for their iStore card on 22 December 2015, it says it takes 3 business days to process... After waiting, I called the helpline number on 29 December to follow up and was told that my application was not on the system even though I had received all the necessary emails and reference codes after completing the application via the website. The lady on the phone then informed me that it would be followed up and I should hear back in 3-5 business days. After waiting 7 business days I emailed and called once again and was told AGAIN that my application was not found on the system and my details would be forwarded to the accounts department. I still have not heard anything. Not sure how my application can not be found after this length of time and twice being alerted to the fact. Please sort this out ASAP and get back to me.