Corporal Canuck

I just cancelled a reservation at a hostel. The hostel wrote me that because I cancelled only the day after reserving that I can recover the deposit (which is the cost for the first night) but in order to do so I have to send them my bank account number. I'm a bit suspicious. It's not a shady establishment or anything (it's gotten positive reviews in several guidebooks and websites) but still ... What do you guys think?

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