Bunch of liers , I bought a f150 some years a go a...

Bunch of liers , I bought a f150 some years a go and paid for all the extended warranty and under lainment and RUST PROTECTION this last one they told me the soon you see any rust you just bring the truck and we fixed no cost no matter a long you have the truck ( life time warranty).
Now my truck is full of rust I been trying to get some to get me any answers, but no luck!!!