I have two recommendations that may help you in a situation like this. The first is to make a good / reasonable offer for the domain name. If you make a lowball offer, the owner is likely to pass on it because there’s no need to sell a long-held domain name for a low price. The second recommendation is to put a time limit on your offer.
Did you register your .DOMAINS at GoDaddy.com?
A message to frustrated ".com" domainers.
Lesson 1: I do not buy ".com" domain names;
Lesson 2: if you work in the domain name business, you use a domain name ending in ".domains", not ".com";
Lesson 3: I only answer emails ending in ".email", other endings won't be read;
Lesson 4: in regard to domaining, I only visit websites ending in ".domains";
Lesson 5: all this is a joke, I don't buy domain names ;-)