Waiting forever for stock

I have taken out a contract on the 8th of February 2016 from Telkom Direct in Centurion Mall, Pretoria. The contract is for the Samsung Galaxy S6 Edge 64GB with a Smartplan 100 @ R529/pm. After the contract was signed, the consultant informed me no stock is available and the shop does not know when the supplier will send stock. I have countless of times phoned the office but to no avail, the phone just keeps ringing. I have also went in to the store 3 times since and have been informed that no stock has come in for the phone ordered and that they will inform me as soon as stock is received. It is nearing 4 weeks already and yet I took out the contract to have a phone to use (as my personal phone is broken) and not to wait for months after signing a contract until I can use a phone again.