Declining to refund the deposit paid

I took Telkom connection in November 2014. Last month I gave a notice to discontinue as I moved to fibre. There is a refund of R700 that Telkom owes me. It is a deposit I paid when I app**** for their connection. On 21 November I submitted my bank statement and copy of ID at the Vincent branch. They said it has been uploaded on the system and that I must wait for about 10 days to get the refund. They even told me Billing Department will phone me and I must tell them that my bank statement is uploaded on the system. It's now more than two weeks. Today when I emailed the lady at the branch regarding this she tells me I must phone them. This is after being told that I will get the refund in less than 10 days and that someone will contact me soon!!!