Advertising System Fix (Geo Redirection & Availability Page & Affiliate Functions

I have an advertising system written in php, my website pratically works however when you buy a campaign from system it doesnt show any availability for the GEO Targeted traffic into the system by affiliates, it also pays the wm way too much for the traffic they send in if we have no buyers for the traffic type they send in to. The webmaster / affiliate has the option to set a return url if we have no buyer in the system for his traffic, it doesnt send to the return url in the affiliate area. It also pays him for this traffic which it shouldnt since it should be redirected. The traffic redirecting link looks like this [login to view URL] it should track the traffic and redirect to open buyer campaigns ie visitor from usa goto a usa campaign if price is higher than a geo niche buyer campaign. i am open minded for corrective fixes on this perfect working example sites are the following [login to view URL] [login to view URL] please help me thanks!!! i can also give free traffic as a bonus if completed perfectly.