The Capital Pearls uMhlanga claims to difficult to assist us with a query/request

My husband and I recently booked a trip to the Capital Pearls uMhlanga, for 3 nights, however at the time of reservation, my husband and I did not confirm that the month in which the booking was, was correct (we only confirmed that the dates were correct). Needless to say, when the date approached, (the dates we thought we had booked for), we realised that we had then booked for the previous month. We have reached out to the Capital Pearls uMhlanga for a voucher of some sort or the opportunity to rebook our trip at an alternative date (so that we are not completely out of pocket as no refund was requested, just an opportunity to reschedule) and we were informed that it cannot be done. See response directly from management: "I would have offered some sort of voucher or credit in the month for the month – however with the month passing it’s difficult to amend. It will be almost impossible to amend on my side as its closed off already." It should also be advised that no one from the hotel reached out to us during that period to confirm why we have not checked in. The booking/reservation just went by and now it is do difficult to offer a client/guest who had fully paid for their trip but did not pitch or make use of any of their facilities no credit or voucher. Please stay away from The Capital Pearls UMhlanga- poor management & a bunch of *******.