I just bought some printer refills and have now I have apparently given the seller a good review saying the delivery was fast, the product was excellent and seller was a great ebayer

I only put the order in 5 minutes ago. I haven't received the product, I don't know if its any good and I have never dealt with this seller before and I certainly DID NOT write a review saying all that. 

So why does it show up in my feed back stream? I never wrote it. The only person who benefits from this is the seller so how did they get this false statement put in my comments on sellers?

I'm not happy because if this sort of thing is happening in my comments, it means I cant rely on the ANY ebay comments. They could all be false. 

I'm not happy with this. It puts the entire trust system of ebay reviews in jeopardy.