Poor service delivery and customer care

I visited the store at N1 City Cape town on 6 Sept this year. My grand daughter wanted earing and we took a pair. Got to the till and lady asked me the money, to which I produced my card. I then saw it is R650.00 and told her I will not be taking it. She then informed me she tapped already, but no problem they will do a refund, but can only put the money back into my card. Was not happy as it is a normal debit card and they could give me the money, but ok. A month later no refund was done, the store manager tells me that there is nothing she can do I will have to check their head office details online and speak to them. She could not give me the relevant details. I checked online, no number, only an *** option. I mailed, response I need to wait 5-7 days for refund to reflect. A month later they are telling me this. I included the refund slip and bank statement in this correspondence. There is no way of contacting them other than on ***, so no human action. I'm frustrated and struggling to get assistance. Bad service