Because using the wrong tools for the job leads to 5 page posts like this.
It wasn't a case of wrong tools, i needed advice and bought the tools, i.e. gas plus, blow torch, good mole grips and now the stud extractors.
I am very grateful for all the advice from people on here, im new to these DIY mechanic problems so i understand it must need some patience on your part.
Sorry if i bored you with this "5 page post"