Insurance companies are notorious for delaying payment and dragging a claim out and the result being that many people get frustrated and give up or walk away. What the person who was wronged by the insurance company does to “get back” is change insurance companies.
Insurance companies are highly regulated and have lots of rules they have to operate under. What is important to remember is that the rules are designed to make sure they are not taking advantage of you.
It is hard to know the rules as can be seen by reading the ones above and noting that they refer you to more rules and if you go to those rules you are referred further. Beyond that, you still have to know how the rules apply to different situations and how the courts have interpreted the rules.