Voucher given as opposed to a full cash refund

I shopped at Ackermans Ottery for a school pants for my son on Monday, 11 March 2019. The pants was too small and I returned it to Ackermans in Kenilworth Centre for a full refund. The pants was not a sale items so I paid full price for it.

Expecting to be given a full refund (on my debit card because thats how i paid) or in cash, instead I got given a voucher. I was not happy about this but the sales assistant insisted that they dont do cash refunds. This seems highly impossible especially when i return the item unworn with labels in tact.

Ackermans I dont want a refund, I want the cash just like I gave you cash. Shopping at any of your stores in the future will be highly unlikely.