Poor and Terrible Service

I have a Ford Ranger 3.2 XLT on my 90000 km service i spoke to my Dealer Action Ford to exstend my warranty to 200000 all were done and paid for then on my 105000 km service the service manager informed me that there is a problem with Turbo and requires replace of which are under warranty which were escalated on only to be told i have an aftermarket bumper which is ridiculous if the dealer Action Ford on 90000 km service were checked my vehicle and informed me that i do not qualify for warranty due to bumper then i would never have taken out the warranty Ford looking for scape goat out of warranty knowing all 3.2 Ford have Factory Turbo Problem