Bad service from Telkom for a sales order

I placed an order for a Mobile device with telkom on cyber Monday. Within 48hours telkom debited my account with the first installment saying that they needed to do a security deposit for online orders. However to date I have not received the device and neither did Telkom call or send me updates on my order status. I called the call center to follow up on my order twice and on both occasions I received different reasons for why I was given the cellphone as yet. The first time it was because of the colour of the phone, however the colour they claimed to change it to was my original order choice so I don't understand that reason. The second time they said it was because of LTE coverage in my area. I am frustrated with the service that I have been receiving from Telkom. I also want my money back with interest. I need a senior manager to call me and explain truthfully what's wrong with the order and to assist me to cancel the order. Telkom service is appalling and clearly flawed. They are debited customers without giving them the goods which to me should be *******.