Still awaiting my refund

I installed a new unit on the 31 August 2015 and was billed for the old unit in September. I spoke to Sbongile on 01/09/2015 REF CAS/522017/N5J5 regarding a refund and she said the refund would be raised once the 1st invoice for the new unit has been processed.<br> <br> On 02/10/2015 I called and spoke to Elliot Mabatha to follow up on my refund since it did not go through on 01 Sept 2015 and I was debited for the month of Aug and September on 01/10/2015. He then mentioned that he will raise the refund and it will take seven working days from the 02/10/2015. <br> <br> I called this morning three times to follow up since my refund is not yet in my account . I got cut off each time, and the message says the number does not exist.<br> <br> Would someone please get back to me regarding this matter.