Unprofessional service - Online purchases query

I made 2 purchases on line 15/28 April 2020 that were delivered 2 weeks apart, with the first I was contacted to say one item was out of stock I would get a refund directly into my debit card. The second, however, not only took forever to be delivered but I received an incomplete order with no prior explanation to enable me to order elsewhere. There has also not been any refund for quite a number of these missing items. I called in and spoke to a gentleman who told me he would check and get back, he never did. To date, 3 weeks on, I have not heard anything from Makro except for a R31, 95 refund which I assume is for the 15 April order.. Disappointing unprofessional service to customers.