well I finally got it off, it cost be $35 to by this TengTools thing which is made to get rounded off bolts out. Then the new sump plug that the guy sold me was too small, so I had to go back and get another one of them, he found a bigger one, but as I was walking out to my car (well dad's car) I was looking at the one I pulled from my car and the one he had given me, and the one he had given me was too big, by like 1mm. So I went back in there and he told me that there is a third size, which he didn't notice before, but after looking for it for a few mins, he told me that he didn't have any, and that it's a pretty rare plug because he had never sold one, ever.
I ended up having to ring autobarn, he said he had one but when getting there it was the same as the other one from Sprint which was a fraction too big. On the way home I just stopped into Repco to try my luck and they had one the exact right size! ($13 though, ouch!).
So a easy job of an oil and oil filter change turned out to be a real head case lol. But it's done now
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