Ben waiting over a month for a credit

I opened an Edgars account in Feb 2016.<br> On 27 Feb, I received a sunglasses hut voucher for R500. I bought a pair of sunglasses and the lady at the till forgot to put the voucher through. I therefore paid the full amount and she made me fill in a credit form so the R500 could be put back into my Edgars account. I went to Sandton on 19 Mar and a guy by the name of Jimmy J helped me. We found my form for the credit and it had not been processed. Jimmy said he would make it a priority to sort this out for me. Til today (1 April 2016) it has not been done! I am disgusted in the lack of service I have received from Edgars / Sunglasses hut section.