Disgusting and dishonest customer service

We had paid for a Defy washing machine and had been served by Richard who informed us they did not have the new one in stock and will outsource directly from the supply and we will have to wait a week, which we agreed and we waited he later contacted us and told us it cannot be done and offered us the display model and we will get a R600 discount which we agreed. When we arrived at the shop we spoke to Clement and Sidney who told us Richard was not there but had spoken to a manager about the machine then they went to see the machine then they changed tune telling us they cannot see the scratches thus cannot offer such a big discount, they had found a new machine in Cresta which Clement did not even have the courtesy to call and inform us, they were passing the buck to Richard who was not there but Richard is a Game employee and the agreement he has with us must be upheld. Then we asked to speak to the manager only then Clement own u to being the manager that Richard had spoken to. We were left standing in the shop floor while Sidney was chatting up a girl ad making calls while Clement disappeared somewhere without giving us the slip to get the R600 discount.