******** Billed

I went to iStore Centurion Mall on 2nd September 2017. Was assisted by a guy call Antuan Ferreira. I was looking a for a new iphone device. It turned out they didn't have stock of the device. This was only after taking all my details down. I left the store and went to a different service provider who was able to supply me with the device. Now today I'm getting an email from Antuan who tells me that I will be billed for that device. How am I getting billed for something I did even take from their store. This is so ********.