Definitly dont throw that towel in yet buddy. Take the above advice and let it sit. In the meantime order yourself a good extract clone kit from
www.austinhomebrew.com or somewhere and follow their instructions to a TEE. You should end up with some good tasting brew.
I made an Oyster Stout about a month ago and up until last week it tasted strongly of coffee. I thought I had used way to much coffee malt but this week the flavores have mellowed and mixed and not I only get a hint of the flavor. Im very excited BTW about this brew.