Worse customer service

I had made an online purchase with Mako online, 2 items was purchased but immediately after purchase maybe a few minutes later I request a refund for order. I have since March 2025 not been refunded full for the items purchased. 2 items was purchased if which only one item was sent the refund. The other item amount of about 480 is still outstanding. Several emails sent to makro and either no response or they tell you that they will refer the matter to the right department to assist. It now 3 months later and this is the worse service. They owe me more than just the refund for this kind of service. I realize makro is dealing with 3rd party people who supply and deliver for them, so when we have issues we now not dealing directly with makro but they must now wait on there third party to sort them out before they sort the customer out. This isn't right as we deal with makro who's a legit brand and this business ways not good