Wrong iPad Ordered because staff member assumed

I entered into a new contract on Monday at the Vodashop CBD (Standard Bank Centre) for a 124gig iPad Air2. The system was offline, so the gentleman loaded the contract later. I went to pick up my new iPad today to find out that they had ordered the 16Gig and that I now have to wait until MONDAY as they only get deliveries 12 o'clock on Mon, Wed and Friday. BUT if I had decided to wait 45 minutes yesterday I could have had it tomorrow being Friday.<br> I am not impressed. Why did no-one phone me to confirm exactly which device I wanted ? On Monday ? Why do I now have to wait until NEXT Monday ? Why can't this ordered be sorted out for tomorrow ? And why oh why did the very nice lady at the shop ASSUME what I wanted when she could have phoned me and KNOWN!