worst service ever

I was at your canal walk century city branch wednesday about 18:30 to buy a car radio. We asked the sales person for a help after a few minutes of waiting. He said that he don't have stock but could sell me the displayed one. I asked him to give it to me then. After struggling he couldnt get it out and just walked away. He didnt return and at that point I had to rush to pick up my daughter. A bitter taste was left in my mouth as I a loyal game customer. The radio I want was 1 on display for R432 it had usb and aux features. I would like canal walk to get me that radio as you can like your bluetooth and phone to it. I will pay for it as I really want it. Please let me know what you will be doing about it. Regards Rafique Gool