cell phone display for r499

cellphone purchase at fochini vaal mall. When we arrived at fochine to choose a cell phone that my daughter will purchase for me, we decided on the mobi samba for special of R499.00 it was also priced for this amount.We confronted the sales assisted - we are interested in this phone for R 499 and if they have stock,Then the sales assistant said they have stock but we have to get proof of address. In order to purchase this phone. A proof address on the bank state will help. Again we ask if they have stock and they confirmed yes. 3 min later when we arrived back from bank WITH the proof of address the price of the special was removed for R499.00 and there is only one PHONE on display available, I really wanted the phone cause it was in my daughter's budget to buy for me. And it is really a nice phone for the price , now we paid R999.00 for the phone that was on display and THE sale assistant did not even apologies for the mistake, they only went on if this is a normal sale and laugh at me, The assistant did not make sure if everything was in box or accessories that came with the phone..just because we want to purchase a cheap phone.it does NOT mean you can treat US with DISRESPECT