How long do Orange take to unlock iphones?

My mum got a new iphone and so she is giving me her old one, ive given her the £20 to unlock the phone and they said it can take "up to 15 days" just wondering if anyone has any experience with this because my current phone is on its last legs! Cheers

I unlocked my iPhone through remote unlocking method. This method of unlocking happened within minutes. I got the remote unlocking for my iPhone from at affordable cost.