Wheel nut removal

Me again
My breaks pads went after having to do a emergency stop to avoid hitting a dog the other night ( it was safe to do one ) I had new tyres fitted just over a week ago think they over tightened them and damaged them just I went to replace the pads this morning and all the wheel nuts are rounded the alloy Allan key type the adapter doesn't work and one nut is split anyway to get these off as the tyre centre isn't open and need the car for work I've got a few extra nuts to replace the old ones should I wait to see if there open on Monday or is there a trick to get them of myself

I am getting sick of this car always something wrong
Many thanks
Wilky