How To Remove A Broken Bolt

My #1Son said y'day he tried drilling out a spooty sensor on the head of 2006 Expedition pile of shite. Bits kept breaking. We get pure shite for tools & replacement parts, but that is another rant... Our factories closed in the 1970's for PAYROLL TAXES..., but that is another rant... The ford is a pile bc you can't even check the tranny fluid... Who raised their hand in the big meeting & suggested this shite?! Why can't you do "improvements" in 5yr increments?! Oi! Nevermind...