Good day Complaint on Game stores sa Ordered a machine on the 21st Feb

Good day Complaint on Game stores sa Ordered a machine on the 21st Feb. Cancelled on the 25th Feb. Refund initiated today 04 March but less delivery charges of R150. How can this be if the delivery did not take place? It would be different if they had delivered it to me then yes you can justify this charge. Extreme dissapointed with games stores sa. Mrs N Naidoo