Bad service

On Saturday the 21 of April 2018, I went to laybye at Ackermans Walmer Park Port Elizabeth for 640, on the 12 May I went to take out my laybye and when I got there I had to change two items so they refund me the difference and I was told they can't refund me cash because I paid with a card so they transfereed the money back to the card which didn't make sense to me because it was a debit not a credit card but I just said ok, on Monday 14 May I checked and my money wasn't in I phoned them and spoke to Avita who advised I was supposed to be refunded cash I asked to speak to the supervisor someone called Lulu or whatever her name is, then said a totally different story and said Ackermans rules say refund to the card when I asked why Avita said I should've been refunded cash she said no the rules say card I must've spoken to a trainee the money will be in after 72 hours after it was processed, today is the 17th and my money is still not in and all I could get from this lulu character was that its Ackermans rules. Very disappointing and am glad I never went to take Ackermans store card when they kept pestering me with SMS' to come get the card as I already qualify!!!!