Oh dear you have been through a lot sandokco, and I can understand your resistance to further testing right now, but are you seeing a neurologist, and if so, have you considered changing to a different one before you give up altogether?

There are medications available now to help with some cognition problems, have they been suggested at all?

Here's the link to our Traumatic Head Injury Forum: http://neurotalk.psychcentral.com/forum92.html

Maybe you'll get the answers that you're looking for there.