Theft and rudeness of guesthouse

As a business we booked a room for a employee for Sunday, 17 June. Advising them as to what time he will be landing and booking in. Well before his arrival time, we called and emailed to advise that he has missed his flight and will only be arriving today. No phone call was answered or email responded on. This morning we finally received a reply. Simply stating that the manager is elderly and waited all night for our arrival and that they do not read or respond on mails on Sunday. Because they are not comfortable speaking telephonically they prefer whatsapp (a bit difficult when it is for a business and we need records of these communications)

currently, Mr Eckelmann is refusing a refund based on the person not booking in, although he was mailed hours in advance. He has also stated that the person may not stay there as he is apparently booked to capacity for the next 2 weeks. yet the website, (https://www.safarinow.com/go/domehomeself-cateringnelspruit/#booknow) clearly shows availability for tonight.

Beyond their refusal to refund us, allow us to use the room we have fully paid for, their level of unprofessionalism and rudeness was beyond comprehend!!