If it's any help I recently had the same issue, after going to my local dealership I got a replacement key for £19 by 9am the next day, however;
1. I was told that keys are getting harder to source
2. It could take up to 2 weeks to get
Be warned, I was told a new set of nuts with a key would be £26, which sounded good. I then found out they wanted to charge me an additional £60 to remove my old ones and fit the new ones!