I went to a local bike shop, and for the round key type, I was told of the bic pen trick, or to attempt using a hack saw on the straight part. which I don't have, nor do I think I have the strength for it, sadly.
I spoke with a locksmith, who told me they'd charge $40 for the actual visit and then $50 for the actual breaking (drilling, picking, etc.) and couldn't guarantee if they could do it.
so, any advice?
it's even more ridiculous because my bike isn't even in great shape, I want to unlock it to get it fixed!