What could have caused this?

[BrynYoungblut]

If you want what you're owed then its time to load up your 9mm and make a trip down to WuYi headquarters.

Definitely the best advice so far...

 

[SCM419]

One of the networks that i ran this campaign for says they dont use cookie-based tracking therefore my leads dont get counted. I'm going to extend the campaign more with a network that does use cookie-based tracking to see if everything is fine and tracking right. I'll update this thread with the results.

 

[climed]

If you want what you're owed then its time to load up your 9mm and make a trip down to WuYi headquarters.

Maybe you should ask Ryan Eagle to come with you too. That dude is gangsta.

 

[theredheadknows]

In a past life I was a legal secretary, if I had just lost $15K to a shady merchant, I would be in my attorneys office, actually I would have been there yesterday.

 

[audax]

My first guess is similar to what MentalyDisturbd described. It is possible that your pixel was improperly placed and your pixel was firing for sales that are not yours. Your media buy company should be able to clear that up if they have the appropriate data. The only way I could see disproving this theory is if your media company can tell you the exact timestamp of when the visitor clicked and when they completed the sale. If those two timestamps are identical on those questionable leads, then your pixel was placed improperly. The timestamps would only be identical if the first time the media buy tracking saw those visitors was when they converted, which clearly shows that you didn't refer the sale and the pixel was placed wrong.