So I took my car to get fenders rolled today and they couldn't get 3 wheels off.... Reason: most of the studs either spun or one didn't even budge and ended up guy breaking the stud.

2 weeks ago I got my wheels(16x8+26)and tire installed at tire shop and used open ended muteki lugs. Do you think tire shop did something wrong or it's on my end for some reason?? I didn't install extended wheel studs because it looked like it had enough clearance.

Pretty bummed out.... One wheel the lugs came off like it was supposed to. Other three... Not so well

How will I remove these lugs off the stud?? Will I have to have the tire shop break them off?? I'll ask them to use impact wrench first but I'm wondering why this even happened so I can avoid future problems

Lugs pitch is for fit. 12x1.5. So that's not issue

 

I suggest:
Try introducing penetrating oil into the threads. Then
My first choice is grinding the nuts on two opposite sides of the nuts so you can knock them off with a chisel. The nuts are wasted but I think they are wrong anyway. See later comments.
I had other ways to remove the lugbolts but they don't do any better and won't save the lugbolts. You must replace ALL of the lugbolts, i.e. the studs, with new ones 12x1.5 lugs simplyy because once damaged the threads are worthless even if they appear OK. Replacement studs cost about a dollar or two so the cost is minimal. The sdtuds must be replaced anyway so any damage to them isn't important.
And unless you supplied the lugnuts the tire shop is at fault if the threads are not 12x1.5; check by counting the threads per inch or mm. 1.5 threads are 1.5mm per 'groove', or .060" per groove. if you can count the number of grooves (pitch) in say 6 mm or 1/4" and you should get 4 "grooves'. If you get 5 grooves the pitch ids 1.25 threads. (OK , actually 4.8 grooves). And it could be the power driver had so much power that once the nuts were fully seated they were spun in the hub, not exactly unknown either. Either way the tire shop is at fault. It wiouldn't be the first time a power wrench was set at 200 lb-ft to install nuts at 85 lb-ft.
BTW, IF YOU DIDN'T HAVE 8 THREADS ENGAGED IN THE NUTS YOU ARE TAKING A CHANCE ON THE LUGNUTS STRIPPING OFF, A DANGEROUS SITUATION. tHE LESS, THE GREATER CHANCE YO TOOK. MAYBE PROVIDENCE WAS LOOKING OUT FOR YOU.

You can try chiseling the nuts from the end or drilling or using a pencil grinder bit but don't worry about the studs being damaged, thety are throwaways now anyway.
If the nut is into the wheel so far that they cannot be reached with a grinder but the stud can be, you can grind a slot in the end of the stud to use as a lot for a screwdriver to hold the stud while the nut is 'unscrewed'. If that doesn't work spin the studs so that hub bore for the studs is ground out enough that you can pull the wheel with studs out of the hub. Yes, that means new hubs or rebored to bigger base stud bolts. No, not real cheap, either

I suspect the lugnuts are not 12x1.5 but 12x1.25 and thus using typical power nut drivers they seized ( which is why you lightly lube the studs with hi temp gease and then finger tighten lugnuts and torque with a hand wrench) because the 12x1.25 easily overide the 1.5 thread pitch when power driven. If that is the case the tire shop is at fault unless you supplied the nuts. Even then they could have checked them before installing so they have some responsibility.

Sorry to offer such strenous solutions but its all I can offer based on our successfully removing seized stud nuts.
Good luck.