You had a confirmed room reservation at the hotel and whether you used it or not you must pay for it. A deposit was not part of the booking. If you wished to cancel the booking and pay nothing it would have necessitated a request by you and an acceptance by them, which they are not obliged to give.The reservation was no doubt subject to the hotels terms and conditions (whether you had acquainted yourself with them or not does not matter) which no doubt includes the term that payment must be made on or before the day of departure and to not do so leaves you liable to both a civil and criminal action.