Poor service

Booking.com is refusing to refund me I made the booking and paid for it. Then the national lock down was announced They are keeping my money, they refuse to pay me my money back, they are also not sending the money to the hotel since the hotel only get the money after I have stayed I have asked them to at least change the date for me since now the lock down has been lifted I always travel to Durban for business, they are not willing to help me resolve the matter I did not get the servise due to lock down And they will not change the date or refund me