Need suggestions and advice !

This maybe off topic and if so I apologize for the intrusion but I need advice on the following:

I have a domain that is an ecommerce site in a very competitive area (ink) I am not indexed in google because long ago I used multiple sites incorrectly and got booted. I have given up on being indexed.

Recently when I did a search on my domain name and clicked on "sites that contain the term" (where I have a presence) the results displayed and one of the Adwords Ads from a Large player came up. I know that using my domain name as a keyword is probably not a violation. However the first line of their ad is just my domain name. In other words the ad is representing them as me.

I have contacted Google and they sent a standard canned reply basically saying they would not do anything. I suspect because this company is a hugh user of Adwords. I can't help but believe that using my domain name as the first line of the ad is illegal as it is fraud. I have contacted local attorney's but none in our area have expertise in internet law. What would you folks suggest I do ?

Thanking you in advance
crazydave