Need some advice. Adobe owes me over $1500

Not sure if this is the right forum to put this post in, there are so many forums soI just chose one.

Anyway back in June I decided that I was going to do a cross platform upgrade from production cs3 to production cs4, pc to mac. It was over a month before I was sent a product which just happend to be design standard cs4. The wrong product! So I called and adobe said I had to place another order and I could return design standard. So I ordered another product and was charged an additional $550 ( the upgrade price ). I recieved the product a week later and this time it was the correct one. Two weeks later I recieved a third product and then a few days later a forth product. I was charged an additional two times, making this four charges for one product. I have filled out and uploaded letter of software destructions for the products I do not want.

I called adobe and opened a case, they closed the case saying it had been resolved and nothing happend. So I called customer support and after being on hold for three hours they were little help.

So I'm at a loss for what to do. Adobe owes me for three charges of $550 and I'm finding it impossible to get my money back. This whole ordeal has been going on for 3 months!