Refund for returned product not paid

I returned a product to a Le Creuset branch. I was told by a staff member that LC did not process credit card refunds. She asked for my bank details and then "called" head office in my presence and told me that the payment had been made and would reflect in my bank account in a day or two. No refund came. I contacted "head office" and I have been repeatedly referred back to the same branch. Now I have been told that they do not process cash refunds. I am still out of pocked after a month.