REPELACEMENT PHONE STILL NO GIVEN

I sent my cell phone which I purchased in Feb 2015 in for repairs on the 16-12-2015, a week later I returned to the store to find out the progress of the repair where I was told that Vodacom may require spares therefore it will take a bit longer for me to get the phone back and the assistant will call as she as she has feedback, but this didn't happen, as she didn't have my number (But I have an account and all my details are on their system). So I called the store on Tuesday last week and was told that the phone is manufactured damaged and they need to replace it, so I told the assistant I will be they Saturday and she assured me that would be fine. I get there and the stored doesn't have the replacement phone because the manager hadn't been to collect it as yet ,so they make arrangements with the Westwood branch (as I live in Sydenham) to give me the replacement phone, so I go there yesterday and am told that Bluff hasn't credit my account and they can't credit something they don't have so I must purchase the phone and wait for Bluff to do the credit note. I'm really annoyed and disappointed at the lack of customer service and the run around I've done with absolutely no joy.