Wondering how to force a company to stand by their warranty

Our roofers never showed up to look at the roof vent that blew off in the storm. The roof is only 14 months old so shingles shouldn't have blown away! I am so mad and already planning a few words with them on Monday like if they don't think they are liable under their workmanship warranty, that I am going to contact at least three local roofing companies for new quotes to fix their shoddy work. I will tell each new company exactly who did the last roof and how they refused to cover the workmanship warranty. We live in a small town. This will ensure that all future residents these three companies give quotes on, will hear the word about this other company who won't stand by their warranty. It won't take long for the word to spread in this area. Hopefully, that will get their shoddy backsides out to my house to fix the damage!

We did try to get insurance to cover it first. We have a local insurance company, though I am considering looking for insurance online to get other quotes. Anyway, our deductible wouldn't cover it and they said the roof vent was higher than all our neighbors which is why it blew off to begin with. So, we are back to the roofers fixing their shoddy work!