Boss overpaid me

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So I was overpaid today buy around 500 dollars. I only work part time once a week and have been with this company for 3 years (I used to work full-time before I had my son) so I'm familiar with their pays. I've attemped to contact my boss this morning but she isn't awake yet. Is it possible that to tell them to take my whole pay cheque until its paid off? Or do I transfer it back to them? Not sure how this works. I live in Ontario Canada and not sure how they go about this. And no I dont think I'm entitled to the money or anything, I just want it gone to be honest lol. Has this happened to anyone? Thanks!