SoS Self Defense Tools Denied me pr this message purchase to an Advertised FREE Steel River Colossal Knife, Steel River Kurki Machete Akron Ohio

I keep getting eMails  from SOS Self Defense Tools Via Safe Opt, Moore Ammo and Tactical Tom and maybe a couple of others, Advertising either a Free Steel River Colossal Knife or the Steel River Kurki Machete for just the Shipping and Handling Fee.  After clicking on the part of the advertisers Key Line it takes you to the SOS Website.  I filled in my Personal Mailing Information, Credit Card Information andClick on Complete Order.  The order will not complete and I get the following Message:  

Sorry, it looks like you've already taken advantage of this offer.. Don't worry, we're redirecting you to our websites best selling products for up to 80% off!

Or this Message:

Hey, It looks like you have already taken advantage of this great, 1 time offer. But I have another one for you that I think you are really going to love! Thanks for being a loyal SoS Self-Defense Tools Customer!

They then show you the same products at $30.00 or $35.00 billed in 5 equal individual charges on one's credit card. 

This is total BS. Apparently they only allow you one free Item per household. But they do not have a Rider in the ads through the other Web Sites that direct you to the SOS Web Site.  They should honor the Free Item Advertised for just Shipping and Handling Charge.