Lewis took very long to refund me

On the 15 September I vusited Lewis Stores Upington to pay my *** with my debit card R1500.00, the transaction only went through the 26 of September. On the 21 September I vusited the branch again to make payment because transaction never went through I paid with the same debit card R1400.00 this it went through. On the 26 September Lewis Stores debited my *** with R1500.00. Form to get a refund I had to bring bank statement wich I bring the next day. Monday the 12 October I visited the store again after several visits they told me they don't have money. I was told to collect money on the 15 October I am at the store from 13:00 till 16:00 they can't get hold of someone who must release the refund, have never experienced such bad experience in my life.