Help! Need Mopar locking lug nut taken off.

I've read so many people who say they got theirs off with vice grips, but I used slip jaw pliers to close the vice grips and the ring still spun. Even with the ring cut off, vice grips and a pipe came off before the nut. Mine were torqued too tight by some tire shop.

And of course the jeep dealers don't have the key set for the jeep branded locks. I couldn't believe it either, seems like terrible customer service. But then again, so is selling a jeep without the key, or trading it in without the key. I wish the previous owner and my dealership, a lifetime of flat tires for their rudeness.

A tire shop said they'd get them off for $100 (jeep dealer wanted $250!), and in hindsight I should have done that. But here is what works:
Angle grinder with a metal cutoff wheel, cut straight in to those grooves, in a square and then again to get the corner bits, so you can slide the ring off.
Then you need a 13/16 emergency lug nut extractor, if the vice grips don't work. Autozone, Advanced Auto or Pep Boys, not Oreillys, their kit is too big even though it's the same fraction. You need one per tire, they get stuck on pretty well, unless you have a bench vise and can grind flats into the lug nuts after taking them off. And an air impact wrench to get the lug nut extractor to really bite in.

If you have time to kill, supposedly McGard will sell you a key with proof of ownership and a photo. But that miserable company will never get a dollar from me. As far as I know my car insurance covers stolen tires, my tires aren't fancy anyways, and I want to be able to get them off in case of a flat without worrying about losing keys in the future.