Prior to buying my 6 plus retail, I called AT&T and asked if my 5S would be unlocked after adding the plus to my 2 year contract (contract is up September of 2015). I was told that I would need to wait 15 days from when the new phone is activated. It now has been over 2 weeks and I'm still getting denied. Any suggestions? Do I have to personally tell them that I now have an iPhone 6+ on my contract and not my 5S ?