Take your remover out and make dead sure that when you replace it, the "plunger" of the tool is hitting the end of the spindle and nothing else; that any washer in there has been removed. If the tool is contacting the crank instead of the spindle, you are just doing your best to destroy the crank. It that is all good and the crank is still stuck, hang around. I am sure there are tricks using penetrating oils, temperature changes, etc. I'm not that source.