Iphone X pre-order Issue

Me and my wife pre-ordered Iphone X devices with Vodacom on the morning the pre-orders became available. We both received confirmation mails with reference numbers and a promise to call us. We have not had any calls. The iphone X was launched today, prices advertised and people are happily going in to shops to pick up their devices. We pre-ordered, and should therefore be first in line to receive stock. I understand everything has been sold out. What does pre-ordering help? I was expecting the following: 1. A call within 48 hours to confirm our pre-order, to verify the device and the price plan 2. Indications whether it should be delivered, or an order number with our closest store. 3. Device available to us when we arrive at store. But now we have NO idea where we stand, if we have devices, NOTHING. I left SEVERAL messages to call me back, and so has my wife. NOTHING. She was also on this site, and received a note that she will be called back. NOTHING. So what now???