Extended warranty experiences

Having never before had an extended warranty, I don't know how much it would have paid toward the repairs. Would it have covered 100% of all the repairs? If not, the question becomes how much of the cost would be covered, and how much would I have to pay, and would the amount covered have been more than the cost of an extended warranty? I don't know, and nobody can answer that for sure at this point. But to be clear, I never said I was against extended warranties. If you look at my original post, I bought my F350 in Feb 2021 and not only bought the full extended warranty for 150K miles and 8yrs. I even bought the full maintenance package for the same period. When I was asking about it being a scam, I meant this particular instance, where the dealer seems to not be refunding the warranty cost. So, no offense taken and no nastiness inferred.