on line purchase

I purchased 6 ghost chairs through their on line store, witch indicated that the stock was available, i chose to pay via EFT, which was accepted and i was advised of the delivery date . I was also informed that i could pre-pay the courier costs and just needed to complete a document which would be emailed to me. The delivery date arrived but no delivery. None of my emails were responded to and i had to phone and enquire about the non delivery . I was then sent the delivery document, which i completed and emailed back to them and was informed that the delivery would be over night. The same day i emailed the delivery document i received my first call from them to inform me that there was no stock available and they requested me to take an alternative chair which i rejected and requested them to cancel the order and refund my monies. I was asked to wait for them to try and source the stock from a supplier in Johannesburg. I waited for a day and finally phoned to be told there would be stock available in two weeks time. I then requested cancellation and refund which was agreed to. I was asked to provide my banking detail which i did and requested a proof of payment by return. I still have not received my refund nor a proof of payment despite four email requests. A very frustrating experience. A lesson i have learnt is never to pay by EFT for an online purchase but to use a credit card because you can always arrange a charge back. vey