lug nut problem

aight i got 33*12.50 tires today i have a 3 inch body lift had to do a little modification but thats besides the problem so i get he tires home bc the ppl at pepboys arent allowed to modify anyones car even tho they stadnin right there and i sed they could anyway i git the tires home get the front 2 in fine go to do the back 2 and cant get 5/6 lug nuts off on one side and 1/6 on the other i tried wd40, hammering the wrench standing on the wrench i am gonna try again tomorrow b4 work if not im gonna throw a shop like 30 buck to stick em on but im out o money fro now anyone got any suggestions

sorry about the spellin errors goin on like 23 hrs of being up :sleep: :banghead: ok side note why is there a ukrain smiley (kind o a random country or not maybe im just ignorant or some shit liek that) and some of em is mass cool ok time to go do some more work