BAD SERVICE FROM HAPPY RHINO HOTEL

This hotel i booked to come there in April 2020 but i couldn't come because of the covid-19 lockdown and they gave me a credit note for a new booking because they don't do refunds and i was okay with that. i call them on the 12/11/2020 to make a new booking from 24/12/2020 to 27/12/2020 but they telling i can't because they don't accept credit notes on a Friday or Saturday which is just pure nonsense. now they want to dictate when i can goon vacation and worse the act like this is a free trip when i paid my money and i didn't ask for the country to be on lockdown. Now i have been trying to call them to fix this credit note *** and they not answering my calls. i paid R1856.00 for 4 days & 3 nights stay and they said they not accepting credit notes because rates ay differ, so i went back to booking.com to check the dates i want to come at which is 24/12/2020 to 27/12/2020 and i saw they cost is R1894.00 which is just a R38.00 difference and they not giving me an option to pay that difference and come on my vacation on the Christmas weekend to spend with my family. This a very BAD SERVICE FOR HAPPY RHINO HOTEL AND KNOW HOW YOU WILL BE TREATED IF YOU BOOK WITH THIS HOTEL.