3 Months and Telkom wont refund just under R6000

Went to Telkom to take out a contract for a cellphone; they told me to make a deposit of almost R6000. Found this to be odd so I went back and asked why this specific amount and the guy who was helping me out said that it’s 30% of the phone’s value, but funny because 30% of the phone’s value WAS NOT the amount I was told to deposit. I went ahead and deposited the amount and went back to Telkom 2 weeks later to know what’s the progress with the contract and they told me there has been a mistake and I was supposed to deposit about R7000. Anyway, the guy was kind enough to tell me he’s gonna sort it out and speak to the manager so that they can expedite the whole process so I waited another 2 weeks for a response, but I didn’t get anything. Frustrated, I decided to cancel the contract. I was then told that I will get my refund within 7 days. It’s been almost 3 months, and I’ve been going to the Telkom store twice a week, and they always have excuses. To be honest, not once did I ever get a message or call from them regarding this issue. I have to keep going there in order to get an update. They keep logging new cases all the time due to their own technical failures. The staff don’t even know what they are doing. The service is completely pathetic. Funny because they were so quick to take my money, but now they have a problem returning it.