They approached me with a quotation for car warranty

They approached me with a quotation for car warranty. I took it because I have comprehensive cover with them. Paid for it. Now my car had gearbox problems which they cover for and suddenly they do not cover parts in the gearbox. What kind of nonsense is that? I am fed up with King Price. It is a ****. They employ *********** sfaff who adviced me to have my car stripped even thought the diagnostic report explained perfectly what was wrong with the car because they wanted pictures knowing very well they will not pay. Now my car is useless stuck stripped because of them. I will be suing for damages that's for sure.