Nevada Backroaders

Went down to 4wp today to get a warranty on a tire that was damaged over the weekend. Had a rock go through the side wall on an easy trail at the hump-n-bump. Also had the salesman take a look at two other tires which are starting to bubble on the side. (they replaced one about 3 weeks ago with the same type of problem) He said the damage was caused by hitting rocks and that their warranty didn't cover rock crawling. I told him that I am not a rock crawler and that we usually just run trails. Explained about hitting the rock on a scenic trail over the weekend. (their policy excludes competition racing)
He then stated that they didn't cover off-road damage and that the policy was only for tire damage on road like re-bar or nails. I told them the brochure I had stated that off-road damage was covered. He said it was a mis-print. (I will attach a pic of the brochure) It basically states that it includes off-road tire failure.
He then took the brochure and went to call someone (corp office I assume) and came back and stated that since I had already had 3 warranties over the last 5 years that any future coverage might not be allowed since I was costing them too much money. Keep in mind that I had to pay for a new warranty as well as labor for each of the 3 replacements. 8 warranties total.
Seems to me it's a little odd to sell warranties then decide not to honor them for actually using them. I stated that they would need to refund the warranty costs as this was becoming a legal issue. He stated that they would and it was just like an auto insurance canceling you for too many accidents.
They went ahead and replaced the damaged tire (and charged me for another warranty)

I was just really annoyed that a company would sell an off-road tire, with a warranty for off-road use then say they don't cover off-road damage.

As you can see, it sure looks to me like they should cover off-road use.

What do you guys think?