Stuck in Customer Service Hell!

So 11/19/12 I placed two orders.
The 27th I get two emails telling me products on both orders are out of stock. Apparently this is wrong, only one of my orders had products out of stock and the other order shipped. Fine.

Opened a ticket they say two products on order one are out of stock. Fine, I tell them to replace them with two others.

They email me back saying I owe $6.84 and to pay before they will ship.

Problem here is that the original two items cost $6.14 in total. The two items I replaced the out of stock items with only cost $5.10 in total.  How can I owe $6.84 when the items I picked are $1.04 cheaper?!?

Then I noticed I am now being charged $1.70 for shipping, should be free shipping, was originally when I placed the order.

I explain this to the rep about the cost difference but now he says I only owe $4.06. Where he got this number from I’m not sure. Some different sort of math I guess or he needs new batteries in his calculator.

My actual order right now has a total of $21.20. He says he added the order up and it actually totals $26.23.

I know my total is correct.
The products I ordered have prices of:
If you add those up that equals $21.20 NOT $26.23 like he says he got for a total.

Even if I add that mysterious $1.70 shipping charge to the $21.20 it still does not equal $26.23

My original order was $22.24 which I paid via $20 gift card and paypal for $2.24. So now the rep is saying I owe $4.06 based on the $26.23 – the $22.24 that I already paid. Where is the $26.23 number coming from when my order only totals $21.20 ?!?!

So as of now I paid $22.24 in total originally, but now my order is only $21.20 in total, but my account and cart say I have to pay $6.84 for them to ship my order. The ticket rep says I owe $4.06.
Then I now have a mysterious $1.70 shipping charge now for an order that is supposed to ship free.

Somebody’s math is way off, and it’s not mine.

The way it’s going I’m never going to get this order before Christmas as some of the stuff was for gifts for my kids. Little stocking stuffers.

My first order probably isn’t going to make it here before Christmas either and it had one gift on it. That order was placed the 11/19/12 and finally shipped the 26th but as of right now it’s still in Hong Kong and hasn’t moved. But I direct you back to the top of this post, yes the order shipped the 26th, but the 27th I got an email saying products were out of stock on the order that shipped.  I don’t understand the process going on here at all.

I’m just soooo angry right now over this all…