Since they already got into the BB I bet the cranks and BB are all chewed up. I did it to my first road bike, a japanese bianchi, I wanted to just rebuild it and didn't have the interwebz so I did it with an adjustable wrench and a socket set and channel locks. Needless to say I marked up the bb cups pretty good and the cranks by hammering them off. Luckily it wasn't super valuable. Many people learn by making mistakes, it's just hard to handle when they are learning on something that is a little more precious. At least it isn't a top of the line model.. looks like a boomer but it is still very handsome.