They owe me R 11320-00 - never ever will I deal with them!

NEVER EVER WILL THIS PLACE SEE ME! They are owing me R 11 320-00 from 7 July and nobody is r returning my calls or emails. I called beforehand to confirm stock availability. They Confirmed stock availability. They confirmed stock is couriered! I waited a week - after 7days called them - Oh sorry, we do not have stock. it is the 30th of July today, havent received the refund yet! Nobody is coming back to me!