Credit on closed account - refund?

I recently closed my XFINITY account about 2 months ago and I just got around to returning my XFINITY cable box, which gave me a refund of $120 since they charged me that for unreturned equipment. How do I go about getting this back to my bank account since I no longer have XFINITY. I still have my debit card that I used for this account on file - will it be refunded back to that?