Poor internal processes and still waiting for order to get cancelled and refunded

I placed an online order on the 9th of June (MAK***) and paid for it via credit card. Minutes later I realised that I purchased the incorrect machine and phoned the customer service centre to cancel the order. A few days later nothing has happened and got an SMS that the machine is out for delivery. Again phoned customer service and they promised the order will be cancelled. Few days later, courier arrives with machine at my home. I refused delivery and contacted customer service again. Few days later no refund and order status still ‘in progess’. Contacted customer service again. They rep**** that they are waiting for the item back from the courier before they can refund me. It is not my problem that stock was dispatched on a ‘cancelled order’. Now almost 2 weeks later, my order is still showing ‘in progress’, I have not received any update nor refund. Avoid this place and safe yourself a lot of frustration.