Refund not being paid out

I bought a Twisp for my husband as a gift on 10/02/15 but he did not want it so I returned it to the Centurion outlet within the allowable return/refund time. Unfortunately the lady could not refund me immediately as their policy does not allow it and said that head office will refund me the Monday 23 Feb 2015. (This after their card machine did not work and I had to go and draw cash for the initial purchase.) Till today (more than a month later I am still waiting for my refund. I phoned several times and left several messages and the accounts team make empty promises every time but nothing happens.