Help with stripped subframe nut

Hi guys, while i was removing my rusted subframe, i stripped one of the 4 nuts. I have tried using a dremel to make some flat surface on the nut but nothing works. Im located in brampton, i’ll really appreciate if anyone can help me.

I dont mind paying for your gas and probably a lunch.

Thanks
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Heat it up wit a torch and use vies grip to get it out

That normally works or … get these.
http://www.sears.com/craftsman-10-pc-damaged-bolt-nut-remover-set-low/p-00952166000P?prdNo=3&blockNo=3&blockType=G3

Not those exact ones since they are 3/8" drive and probably don’t go up to 19mm but, get some 1/2" ones and bigger sockets.

im located in Brampton as well. send me a txt and ill come by and give you a hand getting her off. 647 629 4211. had the same problem a couple years ago

Thanks for the offer. I sent you a text message earlier today